Finding the Fourth Proportional to 2,238.24, 3,356.22 and 939.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.24 : 3,356.22 = 939.36 : x
2. Step 2: Convert to fraction form
   2,238.24/3,356.22 = 939.36/x
3. Step 3: Cross multiply
   2,238.24x = 3,356.22 × 939.36
4. Step 4: Simplify right side
   2,238.24x = 3,152,698.82
5. Step 5: Solve for x
   x = 3,152,698.82/2,238.24
6. Step 6: Final answer
   x = 1,408.56