Finding the Fourth Proportional to 3,571.83, 5,354.78 and 2,478.33

Step by Step Solution

1. Step 1: Write the proportion equation
   3,571.83 : 5,354.78 = 2,478.33 : x
2. Step 2: Convert to fraction form
   3,571.83/5,354.78 = 2,478.33/x
3. Step 3: Cross multiply
   3,571.83x = 5,354.78 × 2,478.33
4. Step 4: Simplify right side
   3,571.83x = 13,270,899.53
5. Step 5: Solve for x
   x = 13,270,899.53/3,571.83
6. Step 6: Final answer
   x = 3,715.43