Finding the Fourth Proportional to 2,429.06, 3,643.07 and 869.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.06 : 3,643.07 = 869.15 : x
2. Step 2: Convert to fraction form
   2,429.06/3,643.07 = 869.15/x
3. Step 3: Cross multiply
   2,429.06x = 3,643.07 × 869.15
4. Step 4: Simplify right side
   2,429.06x = 3,166,374.29
5. Step 5: Solve for x
   x = 3,166,374.29/2,429.06
6. Step 6: Final answer
   x = 1,303.54