Gitt at fullmakten er gyldig, godkjenner møtelederen den.

Gitt at means given that, assuming that, or provided that. It introduces a condition.

In this sentence, Gitt at fullmakten er gyldig means something like Provided that the authorization is valid.

It is correct Norwegian, but it sounds somewhat formal or written. In more everyday speech, people might more often say:

• Hvis fullmakten er gyldig ... = If the authorization is valid ...
• Forutsatt at fullmakten er gyldig ... = Provided that the authorization is valid ...

So gitt at is useful to know, especially in formal, legal, or administrative contexts.

Norwegian normally keeps the usual clause order in a subordinate clause introduced by at:

• subject + verb + other elements

So:

• fullmakten = subject
• er = verb
• gyldig = adjective

That gives:

• fullmakten er gyldig

This is the normal order. Norwegian does not move gyldig before the verb here.

This happens because of the V2 rule in Norwegian. In main clauses, the finite verb usually comes in the second position.

The sentence begins with a fronted conditional phrase:

• Gitt at fullmakten er gyldig

After that, the main clause starts, and the finite verb must come next:

• godkjenner

Then comes the subject:

• møtelederen

So:

• Gitt at fullmakten er gyldig, godkjenner møtelederen den.

If you remove the opening phrase, the normal order is:

• Møtelederen godkjenner den.

This word order is very important in Norwegian.

Fullmakt is a noun meaning authorization, power of attorney, or proxy, depending on context.

Fullmakten is the definite singular form:

• en fullmakt = an authorization / a proxy
• fullmakten = the authorization / the proxy

The ending -en marks definiteness here.

So fullmakten means the authorization or the proxy document/authority, not just any authorization.

Yes. Den refers back to fullmakten.

Since fullmakt is a common-gender noun (en fullmakt), the pronoun used for it is den:

• fullmakten → den

So godkjenner møtelederen den means does the chairperson approve it, where it = the authorization / the proxy.

If the noun were neuter, Norwegian would usually use det instead.

That is normal Norwegian word order. In a simple main clause with a subject, verb, and object, the object often comes after the subject and verb.

So:

• Møtelederen godkjenner den.
• subject: møtelederen
• verb: godkjenner
• object: den

When the sentence starts with the condition, the main clause becomes:

• godkjenner møtelederen den

because of the V2 rule, but the object still stays after the subject.

Møtelederen means the chairperson, the meeting leader, or sometimes the chair.

It comes from:

• møteleder = meeting leader / chairperson
• møtelederen = the chairperson

Although older translations might use chairman, Norwegian møteleder itself is gender-neutral. It can refer to a man or a woman.

Norwegian often uses the present tense in cases where English might use either the present or will depending on context.

So:

• godkjenner literally = approves
• but in context it may sound like will approve

In formal statements, rules, or procedures, Norwegian commonly uses the present tense to express what happens under certain conditions.

So this sentence can describe a rule or procedure:

• if the authorization is valid, the chairperson approves it

That is very natural in Norwegian.

Yes. A very natural alternative is:

• Hvis fullmakten er gyldig, godkjenner møtelederen den.

This means almost the same thing.

The difference is mainly tone:

• hvis = neutral, common, everyday if
• gitt at = more formal, more like given that / provided that
• forutsatt at = also formal, often used in legal or administrative language

So gitt at is not wrong at all; it just sounds a bit more formal.

Gyldig means valid.

It is often used about:

• documents
• tickets
• IDs
• contracts
• authorizations
• legal decisions

Examples:

• Passet er gyldig. = The passport is valid.
• Billetten er ikke gyldig. = The ticket is not valid.

In your sentence, fullmakten er gyldig means that the authorization/proxy is legally or formally valid.

Yes. Several parts make it sound formal or administrative:

• gitt at
• fullmakt
• gyldig
• godkjenner

This sounds like language from meeting procedures, legal documents, rules, or official decisions.

A more everyday sentence might be phrased more simply, but this version is perfectly natural in formal written Norwegian.