Finding the Fourth Proportional to 2,615, 3,605.50 and 2,053.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615 : 3,605.50 = 2,053.72 : x
2. Step 2: Convert to fraction form
   2,615/3,605.50 = 2,053.72/x
3. Step 3: Cross multiply
   2,615x = 3,605.50 × 2,053.72
4. Step 4: Simplify right side
   2,615x = 7,404,687.46
5. Step 5: Solve for x
   x = 7,404,687.46/2,615
6. Step 6: Final answer
   x = 2,831.62