Finding the Fourth Proportional to 2,286.49, 3,155.18 and 1,291.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.49 : 3,155.18 = 1,291.86 : x
2. Step 2: Convert to fraction form
   2,286.49/3,155.18 = 1,291.86/x
3. Step 3: Cross multiply
   2,286.49x = 3,155.18 × 1,291.86
4. Step 4: Simplify right side
   2,286.49x = 4,076,050.83
5. Step 5: Solve for x
   x = 4,076,050.83/2,286.49
6. Step 6: Final answer
   x = 1,782.67