Finding the Fourth Proportional to 3,018.67, 4,528.69 and 938.55

Step by Step Solution

1. Step 1: Write the proportion equation
   3,018.67 : 4,528.69 = 938.55 : x
2. Step 2: Convert to fraction form
   3,018.67/4,528.69 = 938.55/x
3. Step 3: Cross multiply
   3,018.67x = 4,528.69 × 938.55
4. Step 4: Simplify right side
   3,018.67x = 4,250,421.92
5. Step 5: Solve for x
   x = 4,250,421.92/3,018.67
6. Step 6: Final answer
   x = 1,408.05