Finding the Fourth Proportional to 4,753.60, 7,124.88 and 1,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   4,753.60 : 7,124.88 = 1,978.72 : x
2. Step 2: Convert to fraction form
   4,753.60/7,124.88 = 1,978.72/x
3. Step 3: Cross multiply
   4,753.60x = 7,124.88 × 1,978.72
4. Step 4: Simplify right side
   4,753.60x = 14,098,142.55
5. Step 5: Solve for x
   x = 14,098,142.55/4,753.60
6. Step 6: Final answer
   x = 2,965.78