Finding the Fourth Proportional to 2,289.54, 3,159.37 and 1,281.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.54 : 3,159.37 = 1,281.23 : x
2. Step 2: Convert to fraction form
   2,289.54/3,159.37 = 1,281.23/x
3. Step 3: Cross multiply
   2,289.54x = 3,159.37 × 1,281.23
4. Step 4: Simplify right side
   2,289.54x = 4,047,879.63
5. Step 5: Solve for x
   x = 4,047,879.63/2,289.54
6. Step 6: Final answer
   x = 1,767.99