Finding the Fourth Proportional to 2,020.32, 3,031.69 and 866.07

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.32 : 3,031.69 = 866.07 : x
2. Step 2: Convert to fraction form
   2,020.32/3,031.69 = 866.07/x
3. Step 3: Cross multiply
   2,020.32x = 3,031.69 × 866.07
4. Step 4: Simplify right side
   2,020.32x = 2,625,636.27
5. Step 5: Solve for x
   x = 2,625,636.27/2,020.32
6. Step 6: Final answer
   x = 1,299.62