Finding the Fourth Proportional to 2,820.78, 3,892.61 and 1,826.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820.78 : 3,892.61 = 1,826.03 : x
2. Step 2: Convert to fraction form
   2,820.78/3,892.61 = 1,826.03/x
3. Step 3: Cross multiply
   2,820.78x = 3,892.61 × 1,826.03
4. Step 4: Simplify right side
   2,820.78x = 7,108,036.93
5. Step 5: Solve for x
   x = 7,108,036.93/2,820.78
6. Step 6: Final answer
   x = 2,519.88