Finding the Fourth Proportional to 1,271.06, 1,754.06 and 711.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.06 : 1,754.06 = 711.50 : x
2. Step 2: Convert to fraction form
   1,271.06/1,754.06 = 711.50/x
3. Step 3: Cross multiply
   1,271.06x = 1,754.06 × 711.50
4. Step 4: Simplify right side
   1,271.06x = 1,248,013.69
5. Step 5: Solve for x
   x = 1,248,013.69/1,271.06
6. Step 6: Final answer
   x = 981.87