Finding the Fourth Proportional to 3,123.68, 4,702.72 and 2,851.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,123.68 : 4,702.72 = 2,851.52 : x
2. Step 2: Convert to fraction form
   3,123.68/4,702.72 = 2,851.52/x
3. Step 3: Cross multiply
   3,123.68x = 4,702.72 × 2,851.52
4. Step 4: Simplify right side
   3,123.68x = 13,409,900.13
5. Step 5: Solve for x
   x = 13,409,900.13/3,123.68
6. Step 6: Final answer
   x = 4,292.98