Finding the Fourth Proportional to 3,931.56, 5,425.90 and 2,253.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.56 : 5,425.90 = 2,253.50 : x
2. Step 2: Convert to fraction form
   3,931.56/5,425.90 = 2,253.50/x
3. Step 3: Cross multiply
   3,931.56x = 5,425.90 × 2,253.50
4. Step 4: Simplify right side
   3,931.56x = 12,227,265.65
5. Step 5: Solve for x
   x = 12,227,265.65/3,931.56
6. Step 6: Final answer
   x = 3,110.03