Finding the Fourth Proportional to 2,379.16, 3,568.71 and 819.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,379.16 : 3,568.71 = 819.18 : x
2. Step 2: Convert to fraction form
   2,379.16/3,568.71 = 819.18/x
3. Step 3: Cross multiply
   2,379.16x = 3,568.71 × 819.18
4. Step 4: Simplify right side
   2,379.16x = 2,923,398.01
5. Step 5: Solve for x
   x = 2,923,398.01/2,379.16
6. Step 6: Final answer
   x = 1,228.75