Finding the Fourth Proportional to 2,516.52, 3,773.76 and 872.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,516.52 : 3,773.76 = 872.72 : x
2. Step 2: Convert to fraction form
   2,516.52/3,773.76 = 872.72/x
3. Step 3: Cross multiply
   2,516.52x = 3,773.76 × 872.72
4. Step 4: Simplify right side
   2,516.52x = 3,293,435.83
5. Step 5: Solve for x
   x = 3,293,435.83/2,516.52
6. Step 6: Final answer
   x = 1,308.73