Finding the Fourth Proportional to 1,433.53, 1,978.32 and 804.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.53 : 1,978.32 = 804.05 : x
2. Step 2: Convert to fraction form
   1,433.53/1,978.32 = 804.05/x
3. Step 3: Cross multiply
   1,433.53x = 1,978.32 × 804.05
4. Step 4: Simplify right side
   1,433.53x = 1,590,668.20
5. Step 5: Solve for x
   x = 1,590,668.20/1,433.53
6. Step 6: Final answer
   x = 1,109.62