Finding the Fourth Proportional to 2,842.71, 4,264.61 and 868.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,842.71 : 4,264.61 = 868.47 : x
2. Step 2: Convert to fraction form
   2,842.71/4,264.61 = 868.47/x
3. Step 3: Cross multiply
   2,842.71x = 4,264.61 × 868.47
4. Step 4: Simplify right side
   2,842.71x = 3,703,681.50
5. Step 5: Solve for x
   x = 3,703,681.50/2,842.71
6. Step 6: Final answer
   x = 1,302.87