Finding the Fourth Proportional to 3,061.52, 4,591.70 and 869.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.52 : 4,591.70 = 869.72 : x
2. Step 2: Convert to fraction form
   3,061.52/4,591.70 = 869.72/x
3. Step 3: Cross multiply
   3,061.52x = 4,591.70 × 869.72
4. Step 4: Simplify right side
   3,061.52x = 3,993,493.32
5. Step 5: Solve for x
   x = 3,993,493.32/3,061.52
6. Step 6: Final answer
   x = 1,304.42