Finding the Fourth Proportional to 3,047.82, 4,571.71 and 856.53

Step by Step Solution

1. Step 1: Write the proportion equation
   3,047.82 : 4,571.71 = 856.53 : x
2. Step 2: Convert to fraction form
   3,047.82/4,571.71 = 856.53/x
3. Step 3: Cross multiply
   3,047.82x = 4,571.71 × 856.53
4. Step 4: Simplify right side
   3,047.82x = 3,915,802.48
5. Step 5: Solve for x
   x = 3,915,802.48/3,047.82
6. Step 6: Final answer
   x = 1,284.79