Finding the Fourth Proportional to 1,798.05, 2,481.31 and 1,012.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,798.05 : 2,481.31 = 1,012.09 : x
2. Step 2: Convert to fraction form
   1,798.05/2,481.31 = 1,012.09/x
3. Step 3: Cross multiply
   1,798.05x = 2,481.31 × 1,012.09
4. Step 4: Simplify right side
   1,798.05x = 2,511,309.04
5. Step 5: Solve for x
   x = 2,511,309.04/1,798.05
6. Step 6: Final answer
   x = 1,396.68