Finding the Fourth Proportional to 2,615.15, 3,610.31 and 2,016.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,615.15 : 3,610.31 = 2,016.33 : x
2. Step 2: Convert to fraction form
   2,615.15/3,610.31 = 2,016.33/x
3. Step 3: Cross multiply
   2,615.15x = 3,610.31 × 2,016.33
4. Step 4: Simplify right side
   2,615.15x = 7,279,566.28
5. Step 5: Solve for x
   x = 7,279,566.28/2,615.15
6. Step 6: Final answer
   x = 2,783.62