Finding the Fourth Proportional to 3,931.33, 5,425.28 and 2,252.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.33 : 5,425.28 = 2,252.80 : x
2. Step 2: Convert to fraction form
   3,931.33/5,425.28 = 2,252.80/x
3. Step 3: Cross multiply
   3,931.33x = 5,425.28 × 2,252.80
4. Step 4: Simplify right side
   3,931.33x = 12,222,059.52
5. Step 5: Solve for x
   x = 12,222,059.52/3,931.33
6. Step 6: Final answer
   x = 3,108.89