Finding the Fourth Proportional to 1,086.92, 1,498.82 and 838.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,086.92 : 1,498.82 = 838.28 : x
2. Step 2: Convert to fraction form
   1,086.92/1,498.82 = 838.28/x
3. Step 3: Cross multiply
   1,086.92x = 1,498.82 × 838.28
4. Step 4: Simplify right side
   1,086.92x = 1,256,430.83
5. Step 5: Solve for x
   x = 1,256,430.83/1,086.92
6. Step 6: Final answer
   x = 1,155.96