Finding the Fourth Proportional to 2,863.96, 4,272.17 and 2,767.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,863.96 : 4,272.17 = 2,767.98 : x
2. Step 2: Convert to fraction form
   2,863.96/4,272.17 = 2,767.98/x
3. Step 3: Cross multiply
   2,863.96x = 4,272.17 × 2,767.98
4. Step 4: Simplify right side
   2,863.96x = 11,825,267.28
5. Step 5: Solve for x
   x = 11,825,267.28/2,863.96
6. Step 6: Final answer
   x = 4,128.99