Finding the Fourth Proportional to 2,429.71, 3,644.62 and 869.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.71 : 3,644.62 = 869.82 : x
2. Step 2: Convert to fraction form
   2,429.71/3,644.62 = 869.82/x
3. Step 3: Cross multiply
   2,429.71x = 3,644.62 × 869.82
4. Step 4: Simplify right side
   2,429.71x = 3,170,172.92
5. Step 5: Solve for x
   x = 3,170,172.92/2,429.71
6. Step 6: Final answer
   x = 1,304.75