Finding the Fourth Proportional to 1,066.34, 1,472.01 and 717.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,066.34 : 1,472.01 = 717.23 : x
2. Step 2: Convert to fraction form
   1,066.34/1,472.01 = 717.23/x
3. Step 3: Cross multiply
   1,066.34x = 1,472.01 × 717.23
4. Step 4: Simplify right side
   1,066.34x = 1,055,770.72
5. Step 5: Solve for x
   x = 1,055,770.72/1,066.34
6. Step 6: Final answer
   x = 990.09