Finding the Fourth Proportional to 2,289.25, 3,159.17 and 1,241.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.25 : 3,159.17 = 1,241.31 : x
2. Step 2: Convert to fraction form
   2,289.25/3,159.17 = 1,241.31/x
3. Step 3: Cross multiply
   2,289.25x = 3,159.17 × 1,241.31
4. Step 4: Simplify right side
   2,289.25x = 3,921,509.31
5. Step 5: Solve for x
   x = 3,921,509.31/2,289.25
6. Step 6: Final answer
   x = 1,713.01