Finding the Fourth Proportional to 1,080.63, 1,491.27 and 614.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,080.63 : 1,491.27 = 614.88 : x
2. Step 2: Convert to fraction form
   1,080.63/1,491.27 = 614.88/x
3. Step 3: Cross multiply
   1,080.63x = 1,491.27 × 614.88
4. Step 4: Simplify right side
   1,080.63x = 916,952.10
5. Step 5: Solve for x
   x = 916,952.10/1,080.63
6. Step 6: Final answer
   x = 848.53