Finding the Fourth Proportional to 1,271.27, 1,754.37 and 711.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.27 : 1,754.37 = 711.79 : x
2. Step 2: Convert to fraction form
   1,271.27/1,754.37 = 711.79/x
3. Step 3: Cross multiply
   1,271.27x = 1,754.37 × 711.79
4. Step 4: Simplify right side
   1,271.27x = 1,248,738.64
5. Step 5: Solve for x
   x = 1,248,738.64/1,271.27
6. Step 6: Final answer
   x = 982.27