Finding the Fourth Proportional to 1,443.01, 1,991.46 and 804.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443.01 : 1,991.46 = 804.99 : x
2. Step 2: Convert to fraction form
   1,443.01/1,991.46 = 804.99/x
3. Step 3: Cross multiply
   1,443.01x = 1,991.46 × 804.99
4. Step 4: Simplify right side
   1,443.01x = 1,603,105.39
5. Step 5: Solve for x
   x = 1,603,105.39/1,443.01
6. Step 6: Final answer
   x = 1,110.95