Finding the Fourth Proportional to 2,862.29, 4,271.71 and 2,788.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,862.29 : 4,271.71 = 2,788.48 : x
2. Step 2: Convert to fraction form
   2,862.29/4,271.71 = 2,788.48/x
3. Step 3: Cross multiply
   2,862.29x = 4,271.71 × 2,788.48
4. Step 4: Simplify right side
   2,862.29x = 11,911,592.34
5. Step 5: Solve for x
   x = 11,911,592.34/2,862.29
6. Step 6: Final answer
   x = 4,161.56