Finding the Fourth Proportional to 1,055.31, 1,456.42 and 700.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.31 : 1,456.42 = 700.61 : x
2. Step 2: Convert to fraction form
   1,055.31/1,456.42 = 700.61/x
3. Step 3: Cross multiply
   1,055.31x = 1,456.42 × 700.61
4. Step 4: Simplify right side
   1,055.31x = 1,020,373.38
5. Step 5: Solve for x
   x = 1,020,373.38/1,055.31
6. Step 6: Final answer
   x = 966.90