Finding the Fourth Proportional to 2,443.99, 3,665.29 and 688.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.99 : 3,665.29 = 688.88 : x
2. Step 2: Convert to fraction form
   2,443.99/3,665.29 = 688.88/x
3. Step 3: Cross multiply
   2,443.99x = 3,665.29 × 688.88
4. Step 4: Simplify right side
   2,443.99x = 2,524,941.53
5. Step 5: Solve for x
   x = 2,524,941.53/2,443.99
6. Step 6: Final answer
   x = 1,033.12