$525$ Similar to Problem $5\mathrm{.}24,$ except the elevation of BM X is $543\mathrm{.}56$ ft$,$ and rod readings $($in feet$)$ are $($U denotes upper cross$-$wire readings, M middle wire.

and L lower wire$)$: $+$S on BM X: U $=4\mathrm{.}898,$ M $4\mathrm{.}146.$ L $3\mathrm{.}396$; $-$S on TPI:

U $=5\mathrm{.}875,$ M $=4\mathrm{.}948,$ L$.=4\mathrm{.}023$; $+$S on TP$1$: U $=6\mathrm{.}504$; M $=5\mathrm{.}487,$ L $=4\mathrm{.}472$;

$-$S on BM Y: U $=5\mathrm{.}874,$ M $=5\mathrm{.}026,$ L $=4\mathrm{.}176.$

$5\mathrm{.}26$

$$\mathrm{.}27$

$28$

Assuming a stadia constant of $99\mathrm{.}987,$ what is the distance