Finding the Fourth Proportional to 3,106.10, 4,280.37 and 2,219.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,106.10 : 4,280.37 = 2,219.42 : x
2. Step 2: Convert to fraction form
   3,106.10/4,280.37 = 2,219.42/x
3. Step 3: Cross multiply
   3,106.10x = 4,280.37 × 2,219.42
4. Step 4: Simplify right side
   3,106.10x = 9,499,938.79
5. Step 5: Solve for x
   x = 9,499,938.79/3,106.10
6. Step 6: Final answer
   x = 3,058.48