Finding the Fourth Proportional to 2,388.88, 3,583.83 and 928.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.88 : 3,583.83 = 928.03 : x
2. Step 2: Convert to fraction form
   2,388.88/3,583.83 = 928.03/x
3. Step 3: Cross multiply
   2,388.88x = 3,583.83 × 928.03
4. Step 4: Simplify right side
   2,388.88x = 3,325,879.20
5. Step 5: Solve for x
   x = 3,325,879.20/2,388.88
6. Step 6: Final answer
   x = 1,392.24