Finding the Fourth Proportional to 2,516.16, 3,773.74 and 872.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,516.16 : 3,773.74 = 872.70 : x
2. Step 2: Convert to fraction form
   2,516.16/3,773.74 = 872.70/x
3. Step 3: Cross multiply
   2,516.16x = 3,773.74 × 872.70
4. Step 4: Simplify right side
   2,516.16x = 3,293,342.90
5. Step 5: Solve for x
   x = 3,293,342.90/2,516.16
6. Step 6: Final answer
   x = 1,308.88