Given the mean absolute deviation for the four forecasting methods shown in the table, which forecasting method is performing best?

$\backslash$table$[[,\backslash$table$[[$Forecast$],[$Method $1]],\backslash$table$[[$Forecast$],[$Method $2]],\backslash$table$[[$Forecast$],[$Method $3]],\backslash$table$[[$Forecast$],[$Method $4]]],[$Mean Absolute Deviation $($MAD$),3\mathrm{.}4,2\mathrm{.}8,2\mathrm{.}36,1\mathrm{.}92]]$