Finding the Fourth Proportional to 2,020.04, 3,031.50 and 866.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,020.04 : 3,031.50 = 866.12 : x
2. Step 2: Convert to fraction form
   2,020.04/3,031.50 = 866.12/x
3. Step 3: Cross multiply
   2,020.04x = 3,031.50 × 866.12
4. Step 4: Simplify right side
   2,020.04x = 2,625,642.78
5. Step 5: Solve for x
   x = 2,625,642.78/2,020.04
6. Step 6: Final answer
   x = 1,299.80