Finding the Fourth Proportional to 2,826.48, 3,874.80 and 2,781.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826.48 : 3,874.80 = 2,781.12 : x
2. Step 2: Convert to fraction form
   2,826.48/3,874.80 = 2,781.12/x
3. Step 3: Cross multiply
   2,826.48x = 3,874.80 × 2,781.12
4. Step 4: Simplify right side
   2,826.48x = 10,776,283.78
5. Step 5: Solve for x
   x = 10,776,283.78/2,826.48
6. Step 6: Final answer
   x = 3,812.62