Finding the Fourth Proportional to 1,433.93, 1,978.90 and 804.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.93 : 1,978.90 = 804.42 : x
2. Step 2: Convert to fraction form
   1,433.93/1,978.90 = 804.42/x
3. Step 3: Cross multiply
   1,433.93x = 1,978.90 × 804.42
4. Step 4: Simplify right side
   1,433.93x = 1,591,864.73
5. Step 5: Solve for x
   x = 1,591,864.73/1,433.93
6. Step 6: Final answer
   x = 1,110.15