Finding the Fourth Proportional to 1,086.54, 1,499.25 and 614.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.54 : 1,499.25 = 614.28 : x
2. Step 2: Convert to fraction form
   1,086.54/1,499.25 = 614.28/x
3. Step 3: Cross multiply
   1,086.54x = 1,499.25 × 614.28
4. Step 4: Simplify right side
   1,086.54x = 920,959.29
5. Step 5: Solve for x
   x = 920,959.29/1,086.54
6. Step 6: Final answer
   x = 847.61