Finding the Fourth Proportional to 2,286.27, 3,155.06 and 1,238.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.27 : 3,155.06 = 1,238.33 : x
2. Step 2: Convert to fraction form
   2,286.27/3,155.06 = 1,238.33/x
3. Step 3: Cross multiply
   2,286.27x = 3,155.06 × 1,238.33
4. Step 4: Simplify right side
   2,286.27x = 3,906,983.48
5. Step 5: Solve for x
   x = 3,906,983.48/2,286.27
6. Step 6: Final answer
   x = 1,708.89