Finding the Fourth Proportional to 2,286.60, 3,155.56 and 1,291.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,286.60 : 3,155.56 = 1,291.82 : x
2. Step 2: Convert to fraction form
   2,286.60/3,155.56 = 1,291.82/x
3. Step 3: Cross multiply
   2,286.60x = 3,155.56 × 1,291.82
4. Step 4: Simplify right side
   2,286.60x = 4,076,415.52
5. Step 5: Solve for x
   x = 4,076,415.52/2,286.60
6. Step 6: Final answer
   x = 1,782.74