Finding the Fourth Proportional to 1,266.17, 1,747.31 and 706.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,266.17 : 1,747.31 = 706.61 : x
2. Step 2: Convert to fraction form
   1,266.17/1,747.31 = 706.61/x
3. Step 3: Cross multiply
   1,266.17x = 1,747.31 × 706.61
4. Step 4: Simplify right side
   1,266.17x = 1,234,667.55
5. Step 5: Solve for x
   x = 1,234,667.55/1,266.17
6. Step 6: Final answer
   x = 975.12