Finding the Fourth Proportional to 2,333.28, 3,499.63 and 689.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,333.28 : 3,499.63 = 689.79 : x
2. Step 2: Convert to fraction form
   2,333.28/3,499.63 = 689.79/x
3. Step 3: Cross multiply
   2,333.28x = 3,499.63 × 689.79
4. Step 4: Simplify right side
   2,333.28x = 2,414,009.78
5. Step 5: Solve for x
   x = 2,414,009.78/2,333.28
6. Step 6: Final answer
   x = 1,034.60