Finding the Fourth Proportional to 2,238.03, 3,357.59 and 939.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.03 : 3,357.59 = 939.60 : x
2. Step 2: Convert to fraction form
   2,238.03/3,357.59 = 939.60/x
3. Step 3: Cross multiply
   2,238.03x = 3,357.59 × 939.60
4. Step 4: Simplify right side
   2,238.03x = 3,154,786.87
5. Step 5: Solve for x
   x = 3,154,786.87/2,238.03
6. Step 6: Final answer
   x = 1,409.63