Are you referring to the federal 1040-ES vouchers or a state's vouchers?
In any case you can use Forms Mode to open the "Estimated Tax Payment Options" (or "Est Tax Options") for federal (a state's form will have a similar name) to see how the $1,172 (5,172 - 4,000) balance of estimated taxes due was computed. $4,000 expected withholding? $4,000 applied from the 2019 return?
