Finding the Fourth Proportional to 2,333.31, 3,498.90 and 689.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,333.31 : 3,498.90 = 689.28 : x
2. Step 2: Convert to fraction form
   2,333.31/3,498.90 = 689.28/x
3. Step 3: Cross multiply
   2,333.31x = 3,498.90 × 689.28
4. Step 4: Simplify right side
   2,333.31x = 2,411,721.79
5. Step 5: Solve for x
   x = 2,411,721.79/2,333.31
6. Step 6: Final answer
   x = 1,033.61