Finding the Fourth Proportional to 2,772.16, 3,823.77 and 1,919.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,772.16 : 3,823.77 = 1,919.94 : x
2. Step 2: Convert to fraction form
   2,772.16/3,823.77 = 1,919.94/x
3. Step 3: Cross multiply
   2,772.16x = 3,823.77 × 1,919.94
4. Step 4: Simplify right side
   2,772.16x = 7,341,401.83
5. Step 5: Solve for x
   x = 7,341,401.83/2,772.16
6. Step 6: Final answer
   x = 2,648.26