Finding the Fourth Proportional to 1,271.88, 1,755.17 and 712.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,271.88 : 1,755.17 = 712.34 : x
2. Step 2: Convert to fraction form
   1,271.88/1,755.17 = 712.34/x
3. Step 3: Cross multiply
   1,271.88x = 1,755.17 × 712.34
4. Step 4: Simplify right side
   1,271.88x = 1,250,269.85
5. Step 5: Solve for x
   x = 1,250,269.85/1,271.88
6. Step 6: Final answer
   x = 983.01