Finding the Fourth Proportional to 2,237.88, 3,356.72 and 939.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,237.88 : 3,356.72 = 939.25 : x
2. Step 2: Convert to fraction form
   2,237.88/3,356.72 = 939.25/x
3. Step 3: Cross multiply
   2,237.88x = 3,356.72 × 939.25
4. Step 4: Simplify right side
   2,237.88x = 3,152,799.26
5. Step 5: Solve for x
   x = 3,152,799.26/2,237.88
6. Step 6: Final answer
   x = 1,408.83