Finding the Fourth Proportional to 2,615, 3,608.82 and 1,436.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615 : 3,608.82 = 1,436.12 : x
2. Step 2: Convert to fraction form
   2,615/3,608.82 = 1,436.12/x
3. Step 3: Cross multiply
   2,615x = 3,608.82 × 1,436.12
4. Step 4: Simplify right side
   2,615x = 5,182,698.58
5. Step 5: Solve for x
   x = 5,182,698.58/2,615
6. Step 6: Final answer
   x = 1,981.91