Finding the Fourth Proportional to 2,286.75, 3,155.55 and 1,291.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.75 : 3,155.55 = 1,291.83 : x
2. Step 2: Convert to fraction form
   2,286.75/3,155.55 = 1,291.83/x
3. Step 3: Cross multiply
   2,286.75x = 3,155.55 × 1,291.83
4. Step 4: Simplify right side
   2,286.75x = 4,076,434.16
5. Step 5: Solve for x
   x = 4,076,434.16/2,286.75
6. Step 6: Final answer
   x = 1,782.63