Finding the Fourth Proportional to 2,949.50, 4,423.56 and 869.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,949.50 : 4,423.56 = 869.64 : x
2. Step 2: Convert to fraction form
   2,949.50/4,423.56 = 869.64/x
3. Step 3: Cross multiply
   2,949.50x = 4,423.56 × 869.64
4. Step 4: Simplify right side
   2,949.50x = 3,846,904.72
5. Step 5: Solve for x
   x = 3,846,904.72/2,949.50
6. Step 6: Final answer
   x = 1,304.26