Finding the Fourth Proportional to 2,826.74, 4,238.76 and 878.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,826.74 : 4,238.76 = 878.96 : x
2. Step 2: Convert to fraction form
   2,826.74/4,238.76 = 878.96/x
3. Step 3: Cross multiply
   2,826.74x = 4,238.76 × 878.96
4. Step 4: Simplify right side
   2,826.74x = 3,725,700.49
5. Step 5: Solve for x
   x = 3,725,700.49/2,826.74
6. Step 6: Final answer
   x = 1,318.02