$($a$)$ Convert to base $3$: ${372\mathrm{.}54}_8($do all of the arithmetic in decimal$).($Round to two digits past the radix point.$)$

$($b$)$ Convert to base $4$:$387\mathrm{.}7110.($Round to two digits past the radix point.$)$

$4$

$($c$)$ Convert to base $9$: A$44.$A$411($do all of the arithmetic in decimal$).($Round to two digits past the radix point.$)$