Finding the Fourth Proportional to 3,907.78, 5,859.22 and 1,826.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,907.78 : 5,859.22 = 1,826.89 : x
2. Step 2: Convert to fraction form
   3,907.78/5,859.22 = 1,826.89/x
3. Step 3: Cross multiply
   3,907.78x = 5,859.22 × 1,826.89
4. Step 4: Simplify right side
   3,907.78x = 10,704,150.43
5. Step 5: Solve for x
   x = 10,704,150.43/3,907.78
6. Step 6: Final answer
   x = 2,739.19