Finding the Fourth Proportional to 3,860.55, 5,790.82 and 938.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,860.55 : 5,790.82 = 938.83 : x
2. Step 2: Convert to fraction form
   3,860.55/5,790.82 = 938.83/x
3. Step 3: Cross multiply
   3,860.55x = 5,790.82 × 938.83
4. Step 4: Simplify right side
   3,860.55x = 5,436,595.54
5. Step 5: Solve for x
   x = 5,436,595.54/3,860.55
6. Step 6: Final answer
   x = 1,408.24