Finding the Fourth Proportional to 2,249.92, 3,105.12 and 1,318.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,249.92 : 3,105.12 = 1,318.72 : x
2. Step 2: Convert to fraction form
   2,249.92/3,105.12 = 1,318.72/x
3. Step 3: Cross multiply
   2,249.92x = 3,105.12 × 1,318.72
4. Step 4: Simplify right side
   2,249.92x = 4,094,783.85
5. Step 5: Solve for x
   x = 4,094,783.85/2,249.92
6. Step 6: Final answer
   x = 1,819.97