Finding the Fourth Proportional to 1,080.21, 1,491.22 and 732.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,080.21 : 1,491.22 = 732.72 : x
2. Step 2: Convert to fraction form
   1,080.21/1,491.22 = 732.72/x
3. Step 3: Cross multiply
   1,080.21x = 1,491.22 × 732.72
4. Step 4: Simplify right side
   1,080.21x = 1,092,646.72
5. Step 5: Solve for x
   x = 1,092,646.72/1,080.21
6. Step 6: Final answer
   x = 1,011.51