Finding the Fourth Proportional to 1,266.72, 1,747.82 and 707.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,266.72 : 1,747.82 = 707.10 : x
2. Step 2: Convert to fraction form
   1,266.72/1,747.82 = 707.10/x
3. Step 3: Cross multiply
   1,266.72x = 1,747.82 × 707.10
4. Step 4: Simplify right side
   1,266.72x = 1,235,883.52
5. Step 5: Solve for x
   x = 1,235,883.52/1,266.72
6. Step 6: Final answer
   x = 975.66