Finding the Fourth Proportional to 1,641.49, 2,460.03 and 819.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,641.49 : 2,460.03 = 819.52 : x
2. Step 2: Convert to fraction form
   1,641.49/2,460.03 = 819.52/x
3. Step 3: Cross multiply
   1,641.49x = 2,460.03 × 819.52
4. Step 4: Simplify right side
   1,641.49x = 2,016,043.79
5. Step 5: Solve for x
   x = 2,016,043.79/1,641.49
6. Step 6: Final answer
   x = 1,228.18