Complete the given matrix by finding the missing box:

Let us analyze the relationship between the number of dots in the rows and columns:
* Row-wise relationship: From the first cell to the second cell in Row 1, the number of dots increases from $1$ to $3$ ($+2$ dots). Following this same rule for Row 2, the number of dots should increase from $2$ to $2+2=4$ dots.
* Column-wise relationship: From Row 1 to Row 2 in the first column, the number of dots increases from $1$ to $2$ ($+1$ dot). Following this same rule for the second column, the number of dots should increase from $3$ to $3+1=4$ dots.

Therefore, the missing cell must contain exactly 4 dots.