Finding the Fourth Proportional to 1,022.82, 1,541.11 and 844.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,022.82 : 1,541.11 = 844.21 : x
2. Step 2: Convert to fraction form
   1,022.82/1,541.11 = 844.21/x
3. Step 3: Cross multiply
   1,022.82x = 1,541.11 × 844.21
4. Step 4: Simplify right side
   1,022.82x = 1,301,020.47
5. Step 5: Solve for x
   x = 1,301,020.47/1,022.82
6. Step 6: Final answer
   x = 1,271.99