Finding the Fourth Proportional to 1,079.89, 1,490.22 and 614.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,079.89 : 1,490.22 = 614.14 : x
2. Step 2: Convert to fraction form
   1,079.89/1,490.22 = 614.14/x
3. Step 3: Cross multiply
   1,079.89x = 1,490.22 × 614.14
4. Step 4: Simplify right side
   1,079.89x = 915,203.71
5. Step 5: Solve for x
   x = 915,203.71/1,079.89
6. Step 6: Final answer
   x = 847.50