Finding the Fourth Proportional to 1,061.87, 1,465.98 and 689.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.87 : 1,465.98 = 689.18 : x
2. Step 2: Convert to fraction form
   1,061.87/1,465.98 = 689.18/x
3. Step 3: Cross multiply
   1,061.87x = 1,465.98 × 689.18
4. Step 4: Simplify right side
   1,061.87x = 1,010,324.10
5. Step 5: Solve for x
   x = 1,010,324.10/1,061.87
6. Step 6: Final answer
   x = 951.46