Finding the Fourth Proportional to 1,481.61, 2,044.56 and 818.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,481.61 : 2,044.56 = 818.45 : x
2. Step 2: Convert to fraction form
   1,481.61/2,044.56 = 818.45/x
3. Step 3: Cross multiply
   1,481.61x = 2,044.56 × 818.45
4. Step 4: Simplify right side
   1,481.61x = 1,673,377.54
5. Step 5: Solve for x
   x = 1,673,377.54/1,481.61
6. Step 6: Final answer
   x = 1,129.43