Finding the Fourth Proportional to 2,279, 3,141.78 and 1,617.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,279 : 3,141.78 = 1,617.41 : x
2. Step 2: Convert to fraction form
   2,279/3,141.78 = 1,617.41/x
3. Step 3: Cross multiply
   2,279x = 3,141.78 × 1,617.41
4. Step 4: Simplify right side
   2,279x = 5,081,546.39
5. Step 5: Solve for x
   x = 5,081,546.39/2,279
6. Step 6: Final answer
   x = 2,229.73