Finding the Fourth Proportional to 1,079.91, 1,490.28 and 614.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.91 : 1,490.28 = 614.16 : x
2. Step 2: Convert to fraction form
   1,079.91/1,490.28 = 614.16/x
3. Step 3: Cross multiply
   1,079.91x = 1,490.28 × 614.16
4. Step 4: Simplify right side
   1,079.91x = 915,271.52
5. Step 5: Solve for x
   x = 915,271.52/1,079.91
6. Step 6: Final answer
   x = 847.54