Finding the Fourth Proportional to 2,602.05, 3,898.05 and 2,016.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.05 : 3,898.05 = 2,016.72 : x
2. Step 2: Convert to fraction form
   2,602.05/3,898.05 = 2,016.72/x
3. Step 3: Cross multiply
   2,602.05x = 3,898.05 × 2,016.72
4. Step 4: Simplify right side
   2,602.05x = 7,861,275.40
5. Step 5: Solve for x
   x = 7,861,275.40/2,602.05
6. Step 6: Final answer
   x = 3,021.19