Finding the Fourth Proportional to 3,101.94, 4,280.46 and 2,219.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,101.94 : 4,280.46 = 2,219.82 : x
2. Step 2: Convert to fraction form
   3,101.94/4,280.46 = 2,219.82/x
3. Step 3: Cross multiply
   3,101.94x = 4,280.46 × 2,219.82
4. Step 4: Simplify right side
   3,101.94x = 9,501,850.72
5. Step 5: Solve for x
   x = 9,501,850.72/3,101.94
6. Step 6: Final answer
   x = 3,063.20