Finding the Fourth Proportional to 3,451.20, 5,171.68 and 2,534.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,451.20 : 5,171.68 = 2,534.72 : x
2. Step 2: Convert to fraction form
   3,451.20/5,171.68 = 2,534.72/x
3. Step 3: Cross multiply
   3,451.20x = 5,171.68 × 2,534.72
4. Step 4: Simplify right side
   3,451.20x = 13,108,760.73
5. Step 5: Solve for x
   x = 13,108,760.73/3,451.20
6. Step 6: Final answer
   x = 3,798.32