Finding the Fourth Proportional to 2,938.80, 4,408.18 and 747.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,938.80 : 4,408.18 = 747.50 : x
2. Step 2: Convert to fraction form
   2,938.80/4,408.18 = 747.50/x
3. Step 3: Cross multiply
   2,938.80x = 4,408.18 × 747.50
4. Step 4: Simplify right side
   2,938.80x = 3,295,114.55
5. Step 5: Solve for x
   x = 3,295,114.55/2,938.80
6. Step 6: Final answer
   x = 1,121.24