Finding the Fourth Proportional to 2,219.15, 3,329.52 and 986.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.15 : 3,329.52 = 986.45 : x
2. Step 2: Convert to fraction form
   2,219.15/3,329.52 = 986.45/x
3. Step 3: Cross multiply
   2,219.15x = 3,329.52 × 986.45
4. Step 4: Simplify right side
   2,219.15x = 3,284,413.33
5. Step 5: Solve for x
   x = 3,284,413.33/2,219.15
6. Step 6: Final answer
   x = 1,480.03