Finding the Fourth Proportional to 2,863.62, 4,291.76 and 1,219.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,863.62 : 4,291.76 = 1,219.72 : x
2. Step 2: Convert to fraction form
   2,863.62/4,291.76 = 1,219.72/x
3. Step 3: Cross multiply
   2,863.62x = 4,291.76 × 1,219.72
4. Step 4: Simplify right side
   2,863.62x = 5,234,745.51
5. Step 5: Solve for x
   x = 5,234,745.51/2,863.62
6. Step 6: Final answer
   x = 1,828.02