Finding the Fourth Proportional to 2,864.72, 4,297.49 and 1,086.44

Step by Step Solution

1. Step 1: Write the proportion equation
   2,864.72 : 4,297.49 = 1,086.44 : x
2. Step 2: Convert to fraction form
   2,864.72/4,297.49 = 1,086.44/x
3. Step 3: Cross multiply
   2,864.72x = 4,297.49 × 1,086.44
4. Step 4: Simplify right side
   2,864.72x = 4,668,947.62
5. Step 5: Solve for x
   x = 4,668,947.62/2,864.72
6. Step 6: Final answer
   x = 1,629.81