Finding the Fourth Proportional to 2,399.45, 3,311.46 and 1,337.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.45 : 3,311.46 = 1,337.18 : x
2. Step 2: Convert to fraction form
   2,399.45/3,311.46 = 1,337.18/x
3. Step 3: Cross multiply
   2,399.45x = 3,311.46 × 1,337.18
4. Step 4: Simplify right side
   2,399.45x = 4,428,018.08
5. Step 5: Solve for x
   x = 4,428,018.08/2,399.45
6. Step 6: Final answer
   x = 1,845.43