Finding the Fourth Proportional to 3,571.32, 5,357.28 and 938.82

Step by Step Solution

1. Step 1: Write the proportion equation
   3,571.32 : 5,357.28 = 938.82 : x
2. Step 2: Convert to fraction form
   3,571.32/5,357.28 = 938.82/x
3. Step 3: Cross multiply
   3,571.32x = 5,357.28 × 938.82
4. Step 4: Simplify right side
   3,571.32x = 5,029,521.61
5. Step 5: Solve for x
   x = 5,029,521.61/3,571.32
6. Step 6: Final answer
   x = 1,408.31