Finding the Fourth Proportional to 2,289.60, 3,159.71 and 1,294.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,289.60 : 3,159.71 = 1,294.83 : x
2. Step 2: Convert to fraction form
   2,289.60/3,159.71 = 1,294.83/x
3. Step 3: Cross multiply
   2,289.60x = 3,159.71 × 1,294.83
4. Step 4: Simplify right side
   2,289.60x = 4,091,280.83
5. Step 5: Solve for x
   x = 4,091,280.83/2,289.60
6. Step 6: Final answer
   x = 1,786.90