Finding the Fourth Proportional to 2,289.78, 3,159.63 and 1,295.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.78 : 3,159.63 = 1,295.03 : x
2. Step 2: Convert to fraction form
   2,289.78/3,159.63 = 1,295.03/x
3. Step 3: Cross multiply
   2,289.78x = 3,159.63 × 1,295.03
4. Step 4: Simplify right side
   2,289.78x = 4,091,823.54
5. Step 5: Solve for x
   x = 4,091,823.54/2,289.78
6. Step 6: Final answer
   x = 1,786.99