Finding the Fourth Proportional to 2,863.78, 4,291.61 and 1,218.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,863.78 : 4,291.61 = 1,218.67 : x
2. Step 2: Convert to fraction form
   2,863.78/4,291.61 = 1,218.67/x
3. Step 3: Cross multiply
   2,863.78x = 4,291.61 × 1,218.67
4. Step 4: Simplify right side
   2,863.78x = 5,230,034.90
5. Step 5: Solve for x
   x = 5,230,034.90/2,863.78
6. Step 6: Final answer
   x = 1,826.27