Point $1$ N $=10123\mathrm{.}56$ E $=10156\mathrm{.}92$ Point $2$ N $=9905\mathrm{.}56$ E $=9923\mathrm{.}57$

and elevations of $1$ of $104\mathrm{.}15$ and $2$ of $101\mathrm{.}15$ ft$.$ and assuming a constant grade from $1$ to $2$ what would be the distance from $1$ to $3$ if $3$ is at an elevation of $102\mathrm{.}00$ ft$.?$