Finding the Fourth Proportional to 2,289.42, 3,159.56 and 1,294.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.42 : 3,159.56 = 1,294.71 : x
2. Step 2: Convert to fraction form
   2,289.42/3,159.56 = 1,294.71/x
3. Step 3: Cross multiply
   2,289.42x = 3,159.56 × 1,294.71
4. Step 4: Simplify right side
   2,289.42x = 4,090,713.93
5. Step 5: Solve for x
   x = 4,090,713.93/2,289.42
6. Step 6: Final answer
   x = 1,786.79