Finding the Fourth Proportional to 3,745.45, 5,168.34 and 2,066.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,745.45 : 5,168.34 = 2,066.78 : x
2. Step 2: Convert to fraction form
   3,745.45/5,168.34 = 2,066.78/x
3. Step 3: Cross multiply
   3,745.45x = 5,168.34 × 2,066.78
4. Step 4: Simplify right side
   3,745.45x = 10,681,821.75
5. Step 5: Solve for x
   x = 10,681,821.75/3,745.45
6. Step 6: Final answer
   x = 2,851.95