Finding the Fourth Proportional to 2,429.60, 3,643.02 and 869.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.60 : 3,643.02 = 869.52 : x
2. Step 2: Convert to fraction form
   2,429.60/3,643.02 = 869.52/x
3. Step 3: Cross multiply
   2,429.60x = 3,643.02 × 869.52
4. Step 4: Simplify right side
   2,429.60x = 3,167,678.75
5. Step 5: Solve for x
   x = 3,167,678.75/2,429.60
6. Step 6: Final answer
   x = 1,303.79