Finding the Fourth Proportional to 3,198.69, 4,413.56 and 2,019.13

Step by Step Solution

1. Step 1: Write the proportion equation
   3,198.69 : 4,413.56 = 2,019.13 : x
2. Step 2: Convert to fraction form
   3,198.69/4,413.56 = 2,019.13/x
3. Step 3: Cross multiply
   3,198.69x = 4,413.56 × 2,019.13
4. Step 4: Simplify right side
   3,198.69x = 8,911,530.27
5. Step 5: Solve for x
   x = 8,911,530.27/3,198.69
6. Step 6: Final answer
   x = 2,785.99