Finding the Fourth Proportional to 2,240.72, 3,353.90 and 1,198.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,240.72 : 3,353.90 = 1,198.12 : x
2. Step 2: Convert to fraction form
   2,240.72/3,353.90 = 1,198.12/x
3. Step 3: Cross multiply
   2,240.72x = 3,353.90 × 1,198.12
4. Step 4: Simplify right side
   2,240.72x = 4,018,360.29
5. Step 5: Solve for x
   x = 4,018,360.29/2,240.72
6. Step 6: Final answer
   x = 1,793.33