Finding the Fourth Proportional to 2,638.56, 3,640.76 and 1,519.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638.56 : 3,640.76 = 1,519.36 : x
2. Step 2: Convert to fraction form
   2,638.56/3,640.76 = 1,519.36/x
3. Step 3: Cross multiply
   2,638.56x = 3,640.76 × 1,519.36
4. Step 4: Simplify right side
   2,638.56x = 5,531,625.11
5. Step 5: Solve for x
   x = 5,531,625.11/2,638.56
6. Step 6: Final answer
   x = 2,096.46