Finding the Fourth Proportional to 2,016.72, 3,013.61 and 1,513.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.72 : 3,013.61 = 1,513.11 : x
2. Step 2: Convert to fraction form
   2,016.72/3,013.61 = 1,513.11/x
3. Step 3: Cross multiply
   2,016.72x = 3,013.61 × 1,513.11
4. Step 4: Simplify right side
   2,016.72x = 4,559,901.74
5. Step 5: Solve for x
   x = 4,559,901.74/2,016.72
6. Step 6: Final answer
   x = 2,261.05