Finding the Fourth Proportional to 2,429.23, 3,642.95 and 868.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,429.23 : 3,642.95 = 868.81 : x
2. Step 2: Convert to fraction form
   2,429.23/3,642.95 = 868.81/x
3. Step 3: Cross multiply
   2,429.23x = 3,642.95 × 868.81
4. Step 4: Simplify right side
   2,429.23x = 3,165,031.39
5. Step 5: Solve for x
   x = 3,165,031.39/2,429.23
6. Step 6: Final answer
   x = 1,302.89