Finding the Fourth Proportional to 2,882.40, 4,321.72 and 1,238.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,882.40 : 4,321.72 = 1,238.48 : x
2. Step 2: Convert to fraction form
   2,882.40/4,321.72 = 1,238.48/x
3. Step 3: Cross multiply
   2,882.40x = 4,321.72 × 1,238.48
4. Step 4: Simplify right side
   2,882.40x = 5,352,363.79
5. Step 5: Solve for x
   x = 5,352,363.79/2,882.40
6. Step 6: Final answer
   x = 1,856.91