a stock has returns of $21\mathrm{.}94\%(1$ year ago$),4\mathrm{.}50\%(2$ years ago$),$ X $(3$ years ago$),$ and $"-17\mathrm{.}27\%"(4$ years ago$)$ in each of the past years, the geometric average annual return for the stock has $2\mathrm{.}58\%.$ what was the arithmetic average annual return for the stock over the past year?