Finding the Fourth Proportional to 2,863.27, 4,271.50 and 2,783.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,863.27 : 4,271.50 = 2,783.89 : x
2. Step 2: Convert to fraction form
   2,863.27/4,271.50 = 2,783.89/x
3. Step 3: Cross multiply
   2,863.27x = 4,271.50 × 2,783.89
4. Step 4: Simplify right side
   2,863.27x = 11,891,386.14
5. Step 5: Solve for x
   x = 11,891,386.14/2,863.27
6. Step 6: Final answer
   x = 4,153.08