A local quick$-$service restaurant needs to forecast the weekly demand for its signature sandwich for the fourth week of the month.

Assume the forecast demand for the third week was $854$ sandwiches and the actual demand for the third week was $895$ sandwiches.

Showing all work, use a simple exponential smoothing with alpha equal to $0\mathrm{.}40$ to forecast the demand for signature sandwiches for the fourth week of the month.

As part of your calculation, please show all work including:

Formula used $($see text$).$

Numerical values used in the formula.

Final $($calculated$)$ forecast.