Finding the Fourth Proportional to 2,016.90, 3,021.57 and 1,606.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.90 : 3,021.57 = 1,606.50 : x
2. Step 2: Convert to fraction form
   2,016.90/3,021.57 = 1,606.50/x
3. Step 3: Cross multiply
   2,016.90x = 3,021.57 × 1,606.50
4. Step 4: Simplify right side
   2,016.90x = 4,854,152.21
5. Step 5: Solve for x
   x = 4,854,152.21/2,016.90
6. Step 6: Final answer
   x = 2,406.74