Finding the Fourth Proportional to 2,443.53, 3,664.64 and 688.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,443.53 : 3,664.64 = 688.43 : x
2. Step 2: Convert to fraction form
   2,443.53/3,664.64 = 688.43/x
3. Step 3: Cross multiply
   2,443.53x = 3,664.64 × 688.43
4. Step 4: Simplify right side
   2,443.53x = 2,522,859.00
5. Step 5: Solve for x
   x = 2,522,859.00/2,443.53
6. Step 6: Final answer
   x = 1,032.46