Finding the Fourth Proportional to 1,072.82, 1,481.46 and 810.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,072.82 : 1,481.46 = 810.38 : x
2. Step 2: Convert to fraction form
   1,072.82/1,481.46 = 810.38/x
3. Step 3: Cross multiply
   1,072.82x = 1,481.46 × 810.38
4. Step 4: Simplify right side
   1,072.82x = 1,200,545.55
5. Step 5: Solve for x
   x = 1,200,545.55/1,072.82
6. Step 6: Final answer
   x = 1,119.06