Finding the Fourth Proportional to 2,949.15, 4,422.87 and 868.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,949.15 : 4,422.87 = 868.76 : x
2. Step 2: Convert to fraction form
   2,949.15/4,422.87 = 868.76/x
3. Step 3: Cross multiply
   2,949.15x = 4,422.87 × 868.76
4. Step 4: Simplify right side
   2,949.15x = 3,842,422.01
5. Step 5: Solve for x
   x = 3,842,422.01/2,949.15
6. Step 6: Final answer
   x = 1,302.89