Finding the Fourth Proportional to 2,638.55, 3,640.79 and 1,519.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.55 : 3,640.79 = 1,519.54 : x
2. Step 2: Convert to fraction form
   2,638.55/3,640.79 = 1,519.54/x
3. Step 3: Cross multiply
   2,638.55x = 3,640.79 × 1,519.54
4. Step 4: Simplify right side
   2,638.55x = 5,532,320.73
5. Step 5: Solve for x
   x = 5,532,320.73/2,638.55
6. Step 6: Final answer
   x = 2,096.73