Finding the Fourth Proportional to 1,080.72, 1,491.03 and 632.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,080.72 : 1,491.03 = 632.37 : x
2. Step 2: Convert to fraction form
   1,080.72/1,491.03 = 632.37/x
3. Step 3: Cross multiply
   1,080.72x = 1,491.03 × 632.37
4. Step 4: Simplify right side
   1,080.72x = 942,882.64
5. Step 5: Solve for x
   x = 942,882.64/1,080.72
6. Step 6: Final answer
   x = 872.46