Finding the Fourth Proportional to 2,813.86, 3,884.52 and 1,819.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,813.86 : 3,884.52 = 1,819.72 : x
2. Step 2: Convert to fraction form
   2,813.86/3,884.52 = 1,819.72/x
3. Step 3: Cross multiply
   2,813.86x = 3,884.52 × 1,819.72
4. Step 4: Simplify right side
   2,813.86x = 7,068,738.73
5. Step 5: Solve for x
   x = 7,068,738.73/2,813.86
6. Step 6: Final answer
   x = 2,512.11