Finding the Fourth Proportional to 3,906.50, 5,859.30 and 984.60

Step by Step Solution

1. Step 1: Write the proportion equation
   3,906.50 : 5,859.30 = 984.60 : x
2. Step 2: Convert to fraction form
   3,906.50/5,859.30 = 984.60/x
3. Step 3: Cross multiply
   3,906.50x = 5,859.30 × 984.60
4. Step 4: Simplify right side
   3,906.50x = 5,769,066.78
5. Step 5: Solve for x
   x = 5,769,066.78/3,906.50
6. Step 6: Final answer
   x = 1,476.79