Finding the Fourth Proportional to 2,286.41, 3,155.27 and 1,238.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.41 : 3,155.27 = 1,238.49 : x
2. Step 2: Convert to fraction form
   2,286.41/3,155.27 = 1,238.49/x
3. Step 3: Cross multiply
   2,286.41x = 3,155.27 × 1,238.49
4. Step 4: Simplify right side
   2,286.41x = 3,907,764.15
5. Step 5: Solve for x
   x = 3,907,764.15/2,286.41
6. Step 6: Final answer
   x = 1,709.13