Finding the Fourth Proportional to 2,076.29, 3,113.65 and 689.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,076.29 : 3,113.65 = 689.37 : x
2. Step 2: Convert to fraction form
   2,076.29/3,113.65 = 689.37/x
3. Step 3: Cross multiply
   2,076.29x = 3,113.65 × 689.37
4. Step 4: Simplify right side
   2,076.29x = 2,146,456.90
5. Step 5: Solve for x
   x = 2,146,456.90/2,076.29
6. Step 6: Final answer
   x = 1,033.79