Finding the Fourth Proportional to 2,949.55, 4,423.61 and 868.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,949.55 : 4,423.61 = 868.99 : x
2. Step 2: Convert to fraction form
   2,949.55/4,423.61 = 868.99/x
3. Step 3: Cross multiply
   2,949.55x = 4,423.61 × 868.99
4. Step 4: Simplify right side
   2,949.55x = 3,844,072.85
5. Step 5: Solve for x
   x = 3,844,072.85/2,949.55
6. Step 6: Final answer
   x = 1,303.27