Finding the Fourth Proportional to 2,428.62, 3,641.67 and 868.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,428.62 : 3,641.67 = 868.02 : x
2. Step 2: Convert to fraction form
   2,428.62/3,641.67 = 868.02/x
3. Step 3: Cross multiply
   2,428.62x = 3,641.67 × 868.02
4. Step 4: Simplify right side
   2,428.62x = 3,161,042.39
5. Step 5: Solve for x
   x = 3,161,042.39/2,428.62
6. Step 6: Final answer
   x = 1,301.58