Finding the Fourth Proportional to 2,399.86, 3,311.49 and 1,337.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,399.86 : 3,311.49 = 1,337.50 : x
2. Step 2: Convert to fraction form
   2,399.86/3,311.49 = 1,337.50/x
3. Step 3: Cross multiply
   2,399.86x = 3,311.49 × 1,337.50
4. Step 4: Simplify right side
   2,399.86x = 4,429,117.88
5. Step 5: Solve for x
   x = 4,429,117.88/2,399.86
6. Step 6: Final answer
   x = 1,845.57