Finding the Fourth Proportional to 2,949.30, 4,423.24 and 868.74

Step by Step Solution

1. Step 1: Write the proportion equation
   2,949.30 : 4,423.24 = 868.74 : x
2. Step 2: Convert to fraction form
   2,949.30/4,423.24 = 868.74/x
3. Step 3: Cross multiply
   2,949.30x = 4,423.24 × 868.74
4. Step 4: Simplify right side
   2,949.30x = 3,842,645.52
5. Step 5: Solve for x
   x = 3,842,645.52/2,949.30
6. Step 6: Final answer
   x = 1,302.90