Finding the Fourth Proportional to 3,018.89, 4,161.71 and 2,119.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,018.89 : 4,161.71 = 2,119.89 : x
2. Step 2: Convert to fraction form
   3,018.89/4,161.71 = 2,119.89/x
3. Step 3: Cross multiply
   3,018.89x = 4,161.71 × 2,119.89
4. Step 4: Simplify right side
   3,018.89x = 8,822,367.41
5. Step 5: Solve for x
   x = 8,822,367.41/3,018.89
6. Step 6: Final answer
   x = 2,922.39