Finding the Fourth Proportional to 1,363.52, 2,047.34 and 818.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,363.52 : 2,047.34 = 818.15 : x
2. Step 2: Convert to fraction form
   1,363.52/2,047.34 = 818.15/x
3. Step 3: Cross multiply
   1,363.52x = 2,047.34 × 818.15
4. Step 4: Simplify right side
   1,363.52x = 1,675,016.89
5. Step 5: Solve for x
   x = 1,675,016.89/1,363.52
6. Step 6: Final answer
   x = 1,228.45