What is the Forecast for period $4$ when Three period moving average forecast method is used:$($Please round to $2$ decimal places$)$Week orTime series Value orX$($Time Period$)$Y$($Sales$)$Forecast$12345\mathrm{.}85\mathrm{.}210\mathrm{.}610\mathrm{.}0515\mathrm{.}2612\mathrm{.}37$Your Answer: