Finding the Fourth Proportional to 2,820.83, 3,891.44 and 1,826.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820.83 : 3,891.44 = 1,826.43 : x
2. Step 2: Convert to fraction form
   2,820.83/3,891.44 = 1,826.43/x
3. Step 3: Cross multiply
   2,820.83x = 3,891.44 × 1,826.43
4. Step 4: Simplify right side
   2,820.83x = 7,107,414.17
5. Step 5: Solve for x
   x = 7,107,414.17/2,820.83
6. Step 6: Final answer
   x = 2,519.62