Finding the Fourth Proportional to 1,062.81, 1,466.10 and 689.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,062.81 : 1,466.10 = 689.31 : x
2. Step 2: Convert to fraction form
   1,062.81/1,466.10 = 689.31/x
3. Step 3: Cross multiply
   1,062.81x = 1,466.10 × 689.31
4. Step 4: Simplify right side
   1,062.81x = 1,010,597.39
5. Step 5: Solve for x
   x = 1,010,597.39/1,062.81
6. Step 6: Final answer
   x = 950.87