Finding the Fourth Proportional to 3,111.30, 4,669.98 and 2,425.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,111.30 : 4,669.98 = 2,425.43 : x
2. Step 2: Convert to fraction form
   3,111.30/4,669.98 = 2,425.43/x
3. Step 3: Cross multiply
   3,111.30x = 4,669.98 × 2,425.43
4. Step 4: Simplify right side
   3,111.30x = 11,326,709.59
5. Step 5: Solve for x
   x = 11,326,709.59/3,111.30
6. Step 6: Final answer
   x = 3,640.51