What is the present value of the following uneven cash flow stream discounted at a rate of $6\mathrm{.}25\%?$

Year $1$$$75$

Year $2$$$225$

Year $3$$$0$

Year $4$$$300$

$$411\mathrm{.}57$

$$433\mathrm{.}23$

$$456\mathrm{.}03$

$$480\mathrm{.}03$

$$505\mathrm{.}30$