Finding the Fourth Proportional to 2,286.46, 3,155.34 and 1,238.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.46 : 3,155.34 = 1,238.52 : x
2. Step 2: Convert to fraction form
   2,286.46/3,155.34 = 1,238.52/x
3. Step 3: Cross multiply
   2,286.46x = 3,155.34 × 1,238.52
4. Step 4: Simplify right side
   2,286.46x = 3,907,961.21
5. Step 5: Solve for x
   x = 3,907,961.21/2,286.46
6. Step 6: Final answer
   x = 1,709.17