Finding the Fourth Proportional to 3,243.38, 4,478.50 and 3,080.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,243.38 : 4,478.50 = 3,080.30 : x
2. Step 2: Convert to fraction form
   3,243.38/4,478.50 = 3,080.30/x
3. Step 3: Cross multiply
   3,243.38x = 4,478.50 × 3,080.30
4. Step 4: Simplify right side
   3,243.38x = 13,795,123.55
5. Step 5: Solve for x
   x = 13,795,123.55/3,243.38
6. Step 6: Final answer
   x = 4,253.32