Use exponential smoothing with alpha $=0\mathrm{.}3$ and the data below to forecast the sales value for the next time period $($time period $7).$ To initialize the forecasting process, use a naive forecast for time period $2($i$.$e$.$ forecast for time period $2=$ sales for time period $1).$

Enter your answer rounded to $2$ decimal places.

Time period Sales

$145$

$278$

$3102$

$486$

$5104$

$6128$

$7$