Determine the missing amounts in each of these four separate situations a through $d.$

$\backslash$table$[[,a,$b$,$c$,$d$],[$Supplies available$-$prior year$-$end,$$7\mathrm{.}700,$$$3,710,$$ $3,154,],[$Supplies purchased during current year,$4,900,12,614,,13,214],[$Total supplies available,$5,600,16,324,,],[$Supplies available$-$current year$-$end,$(1,150),,(3,634),(800)$