What is the present value of a savings account that is expected to pay a lump sum of $$925$ at the end

of year $1,$ $$0$ lump sum at the end of year $2,$ and a lump sum of $$2,250$ at the end of $3$rd year given

the nominal rate of returns $5\%$ in the first and the second years and $12\mathrm{.}5\%$ in the third year?