Finding the Fourth Proportional to 2,286.69, 3,155.81 and 1,292.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.69 : 3,155.81 = 1,292.28 : x
2. Step 2: Convert to fraction form
   2,286.69/3,155.81 = 1,292.28/x
3. Step 3: Cross multiply
   2,286.69x = 3,155.81 × 1,292.28
4. Step 4: Simplify right side
   2,286.69x = 4,078,183.69
5. Step 5: Solve for x
   x = 4,078,183.69/2,286.69
6. Step 6: Final answer
   x = 1,783.44