Finding the Fourth Proportional to 2,075.28, 2,863.86 and 1,143.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,075.28 : 2,863.86 = 1,143.72 : x
2. Step 2: Convert to fraction form
   2,075.28/2,863.86 = 1,143.72/x
3. Step 3: Cross multiply
   2,075.28x = 2,863.86 × 1,143.72
4. Step 4: Simplify right side
   2,075.28x = 3,275,453.96
5. Step 5: Solve for x
   x = 3,275,453.96/2,075.28
6. Step 6: Final answer
   x = 1,578.32