Finding the Fourth Proportional to 1,061.67, 1,464.57 and 711.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.67 : 1,464.57 = 711.75 : x
2. Step 2: Convert to fraction form
   1,061.67/1,464.57 = 711.75/x
3. Step 3: Cross multiply
   1,061.67x = 1,464.57 × 711.75
4. Step 4: Simplify right side
   1,061.67x = 1,042,407.70
5. Step 5: Solve for x
   x = 1,042,407.70/1,061.67
6. Step 6: Final answer
   x = 981.86