Finding the Fourth Proportional to 2,399.67, 3,311.51 and 1,337.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.67 : 3,311.51 = 1,337.40 : x
2. Step 2: Convert to fraction form
   2,399.67/3,311.51 = 1,337.40/x
3. Step 3: Cross multiply
   2,399.67x = 3,311.51 × 1,337.40
4. Step 4: Simplify right side
   2,399.67x = 4,428,806.79
5. Step 5: Solve for x
   x = 4,428,806.79/2,399.67
6. Step 6: Final answer
   x = 1,845.59