Finding the Fourth Proportional to 1,080.52, 1,491.24 and 608.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,080.52 : 1,491.24 = 608.50 : x
2. Step 2: Convert to fraction form
   1,080.52/1,491.24 = 608.50/x
3. Step 3: Cross multiply
   1,080.52x = 1,491.24 × 608.50
4. Step 4: Simplify right side
   1,080.52x = 907,419.54
5. Step 5: Solve for x
   x = 907,419.54/1,080.52
6. Step 6: Final answer
   x = 839.80