Finding the Fourth Proportional to 1,361.27, 2,033.28 and 1,086.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361.27 : 2,033.28 = 1,086.55 : x
2. Step 2: Convert to fraction form
   1,361.27/2,033.28 = 1,086.55/x
3. Step 3: Cross multiply
   1,361.27x = 2,033.28 × 1,086.55
4. Step 4: Simplify right side
   1,361.27x = 2,209,255.30
5. Step 5: Solve for x
   x = 2,209,255.30/1,361.27
6. Step 6: Final answer
   x = 1,622.93