Finding the Fourth Proportional to 3,745.31, 5,168.56 and 2,066.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,745.31 : 5,168.56 = 2,066.78 : x
2. Step 2: Convert to fraction form
   3,745.31/5,168.56 = 2,066.78/x
3. Step 3: Cross multiply
   3,745.31x = 5,168.56 × 2,066.78
4. Step 4: Simplify right side
   3,745.31x = 10,682,273.53
5. Step 5: Solve for x
   x = 10,682,273.53/3,745.31
6. Step 6: Final answer
   x = 2,852.17