Finding the Fourth Proportional to 2,388.89, 3,582.33 and 927.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,388.89 : 3,582.33 = 927.20 : x
2. Step 2: Convert to fraction form
   2,388.89/3,582.33 = 927.20/x
3. Step 3: Cross multiply
   2,388.89x = 3,582.33 × 927.20
4. Step 4: Simplify right side
   2,388.89x = 3,321,518.46
5. Step 5: Solve for x
   x = 3,321,518.46/2,388.89
6. Step 6: Final answer
   x = 1,390.41