Finding the Fourth Proportional to 2,074.81, 2,863.25 and 1,143.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,074.81 : 2,863.25 = 1,143.31 : x
2. Step 2: Convert to fraction form
   2,074.81/2,863.25 = 1,143.31/x
3. Step 3: Cross multiply
   2,074.81x = 2,863.25 × 1,143.31
4. Step 4: Simplify right side
   2,074.81x = 3,273,582.36
5. Step 5: Solve for x
   x = 3,273,582.36/2,074.81
6. Step 6: Final answer
   x = 1,577.77