Finding the Fourth Proportional to 2,429.74, 3,643.72 and 869.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.74 : 3,643.72 = 869.32 : x
2. Step 2: Convert to fraction form
   2,429.74/3,643.72 = 869.32/x
3. Step 3: Cross multiply
   2,429.74x = 3,643.72 × 869.32
4. Step 4: Simplify right side
   2,429.74x = 3,167,556.50
5. Step 5: Solve for x
   x = 3,167,556.50/2,429.74
6. Step 6: Final answer
   x = 1,303.66