Finding the Fourth Proportional to 2,401.20, 3,313.59 and 1,339.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,401.20 : 3,313.59 = 1,339.00 : x
2. Step 2: Convert to fraction form
   2,401.20/3,313.59 = 1,339.00/x
3. Step 3: Cross multiply
   2,401.20x = 3,313.59 × 1,339.00
4. Step 4: Simplify right side
   2,401.20x = 4,436,884.92
5. Step 5: Solve for x
   x = 4,436,884.92/2,401.20
6. Step 6: Final answer
   x = 1,847.78