Finding the Fourth Proportional to 1,086.45, 1,499.36 and 614.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.45 : 1,499.36 = 614.37 : x
2. Step 2: Convert to fraction form
   1,086.45/1,499.36 = 614.37/x
3. Step 3: Cross multiply
   1,086.45x = 1,499.36 × 614.37
4. Step 4: Simplify right side
   1,086.45x = 921,161.80
5. Step 5: Solve for x
   x = 921,161.80/1,086.45
6. Step 6: Final answer
   x = 847.86