Finding the Fourth Proportional to 2,391.60, 3,299.47 and 1,763.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.60 : 3,299.47 = 1,763.61 : x
2. Step 2: Convert to fraction form
   2,391.60/3,299.47 = 1,763.61/x
3. Step 3: Cross multiply
   2,391.60x = 3,299.47 × 1,763.61
4. Step 4: Simplify right side
   2,391.60x = 5,818,978.29
5. Step 5: Solve for x
   x = 5,818,978.29/2,391.60
6. Step 6: Final answer
   x = 2,433.09