Finding the Fourth Proportional to 2,819.07, 3,890.37 and 1,826.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,819.07 : 3,890.37 = 1,826.07 : x
2. Step 2: Convert to fraction form
   2,819.07/3,890.37 = 1,826.07/x
3. Step 3: Cross multiply
   2,819.07x = 3,890.37 × 1,826.07
4. Step 4: Simplify right side
   2,819.07x = 7,104,089.86
5. Step 5: Solve for x
   x = 7,104,089.86/2,819.07
6. Step 6: Final answer
   x = 2,520.02