Finding the Fourth Proportional to 2,411.38, 3,617.62 and 872.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.38 : 3,617.62 = 872.38 : x
2. Step 2: Convert to fraction form
   2,411.38/3,617.62 = 872.38/x
3. Step 3: Cross multiply
   2,411.38x = 3,617.62 × 872.38
4. Step 4: Simplify right side
   2,411.38x = 3,155,939.34
5. Step 5: Solve for x
   x = 3,155,939.34/2,411.38
6. Step 6: Final answer
   x = 1,308.77