For a fully discrete whole life policy sum insured $1000,$ you know:

Fractional duration reservation is calculated using linear interpolation.

${?}_{24}V=301$

${?}_{24\mathrm{.}25}V=332$

$25\mathrm{.}75V=387$

${?}_{26}V=393$

Calcule ${?}_{25}V.$