Finding the Fourth Proportional to 1,266.72, 1,748.10 and 707.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,266.72 : 1,748.10 = 707.23 : x
2. Step 2: Convert to fraction form
   1,266.72/1,748.10 = 707.23/x
3. Step 3: Cross multiply
   1,266.72x = 1,748.10 × 707.23
4. Step 4: Simplify right side
   1,266.72x = 1,236,308.76
5. Step 5: Solve for x
   x = 1,236,308.76/1,266.72
6. Step 6: Final answer
   x = 975.99