Finding the Fourth Proportional to 2,323.59, 3,205.22 and 1,391.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,323.59 : 3,205.22 = 1,391.55 : x
2. Step 2: Convert to fraction form
   2,323.59/3,205.22 = 1,391.55/x
3. Step 3: Cross multiply
   2,323.59x = 3,205.22 × 1,391.55
4. Step 4: Simplify right side
   2,323.59x = 4,460,216.93
5. Step 5: Solve for x
   x = 4,460,216.93/2,323.59
6. Step 6: Final answer
   x = 1,919.54