Finding the Fourth Proportional to 2,443.17, 3,664.50 and 688.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.17 : 3,664.50 = 688.13 : x
2. Step 2: Convert to fraction form
   2,443.17/3,664.50 = 688.13/x
3. Step 3: Cross multiply
   2,443.17x = 3,664.50 × 688.13
4. Step 4: Simplify right side
   2,443.17x = 2,521,647.16
5. Step 5: Solve for x
   x = 2,521,647.16/2,443.17
6. Step 6: Final answer
   x = 1,032.12