State tax filing

TT Desktop is saying my total estimated 2024 tax payments are $1506.

Then goes on to list four (mostly) uneven payments that add up to $2377.

Am I not understanding something about the vouchers?  As the form suggest all four of the payments are about the same...  While on the voucher lines beneath - and what displays in step-by-step...  the first payment is almost quadrupled.