Finding the Fourth Proportional to 2,874.78, 4,311.06 and 1,119.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,874.78 : 4,311.06 = 1,119.55 : x
2. Step 2: Convert to fraction form
   2,874.78/4,311.06 = 1,119.55/x
3. Step 3: Cross multiply
   2,874.78x = 4,311.06 × 1,119.55
4. Step 4: Simplify right side
   2,874.78x = 4,826,447.22
5. Step 5: Solve for x
   x = 4,826,447.22/2,874.78
6. Step 6: Final answer
   x = 1,678.89