Finding the Fourth Proportional to 2,429.49, 3,643.34 and 869.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.49 : 3,643.34 = 869.07 : x
2. Step 2: Convert to fraction form
   2,429.49/3,643.34 = 869.07/x
3. Step 3: Cross multiply
   2,429.49x = 3,643.34 × 869.07
4. Step 4: Simplify right side
   2,429.49x = 3,166,319.67
5. Step 5: Solve for x
   x = 3,166,319.67/2,429.49
6. Step 6: Final answer
   x = 1,303.29