Finding the Fourth Proportional to 2,391.10, 3,301.89 and 1,800.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.10 : 3,301.89 = 1,800.61 : x
2. Step 2: Convert to fraction form
   2,391.10/3,301.89 = 1,800.61/x
3. Step 3: Cross multiply
   2,391.10x = 3,301.89 × 1,800.61
4. Step 4: Simplify right side
   2,391.10x = 5,945,416.15
5. Step 5: Solve for x
   x = 5,945,416.15/2,391.10
6. Step 6: Final answer
   x = 2,486.48