Finding the Fourth Proportional to 1,061.80, 1,462.96 and 711.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.80 : 1,462.96 = 711.88 : x
2. Step 2: Convert to fraction form
   1,061.80/1,462.96 = 711.88/x
3. Step 3: Cross multiply
   1,061.80x = 1,462.96 × 711.88
4. Step 4: Simplify right side
   1,061.80x = 1,041,451.96
5. Step 5: Solve for x
   x = 1,041,451.96/1,061.80
6. Step 6: Final answer
   x = 980.84