Finding the Fourth Proportional to 3,123.87, 4,687.17 and 3,114.35

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.87 : 4,687.17 = 3,114.35 : x
2. Step 2: Convert to fraction form
   3,123.87/4,687.17 = 3,114.35/x
3. Step 3: Cross multiply
   3,123.87x = 4,687.17 × 3,114.35
4. Step 4: Simplify right side
   3,123.87x = 14,597,470.35
5. Step 5: Solve for x
   x = 14,597,470.35/3,123.87
6. Step 6: Final answer
   x = 4,672.89