Finding the Fourth Proportional to 2,231.75, 3,081.24 and 1,641.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.75 : 3,081.24 = 1,641.26 : x
2. Step 2: Convert to fraction form
   2,231.75/3,081.24 = 1,641.26/x
3. Step 3: Cross multiply
   2,231.75x = 3,081.24 × 1,641.26
4. Step 4: Simplify right side
   2,231.75x = 5,057,123.67
5. Step 5: Solve for x
   x = 5,057,123.67/2,231.75
6. Step 6: Final answer
   x = 2,265.99