Answer
$1249$
Work Step by Step
Given the numbers $4, 1, 9, 2$ we place the smallest digit in the largest valued column.
Therefore, $1$ will be placed in the thousands column.
Next we place the second smallest digit in the second largest valued column.
Therefore the $2$ will be placed in the hundreds column.
Next we place the third smallest digit in the third largest valued column.
Therefore, the $4$ will be placed in the tens column.
Next we place the fourth smallest digit in the fourth largest valued column
Therefore, the $9$ will be placed in the ones column.
$1249$