Finding the Fourth Proportional to 3,906.78, 5,857.72 and 1,825.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.78 : 5,857.72 = 1,825.89 : x
2. Step 2: Convert to fraction form
   3,906.78/5,857.72 = 1,825.89/x
3. Step 3: Cross multiply
   3,906.78x = 5,857.72 × 1,825.89
4. Step 4: Simplify right side
   3,906.78x = 10,695,552.37
5. Step 5: Solve for x
   x = 10,695,552.37/3,906.78
6. Step 6: Final answer
   x = 2,737.69