Finding the Fourth Proportional to 1,447.85, 1,998.04 and 818.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,447.85 : 1,998.04 = 818.38 : x
2. Step 2: Convert to fraction form
   1,447.85/1,998.04 = 818.38/x
3. Step 3: Cross multiply
   1,447.85x = 1,998.04 × 818.38
4. Step 4: Simplify right side
   1,447.85x = 1,635,155.98
5. Step 5: Solve for x
   x = 1,635,155.98/1,447.85
6. Step 6: Final answer
   x = 1,129.37