Finding the Fourth Proportional to 2,144.36, 2,959.67 and 1,641.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,144.36 : 2,959.67 = 1,641.55 : x
2. Step 2: Convert to fraction form
   2,144.36/2,959.67 = 1,641.55/x
3. Step 3: Cross multiply
   2,144.36x = 2,959.67 × 1,641.55
4. Step 4: Simplify right side
   2,144.36x = 4,858,423.28
5. Step 5: Solve for x
   x = 4,858,423.28/2,144.36
6. Step 6: Final answer
   x = 2,265.68