Finding the Fourth Proportional to 1,433.42, 1,978.02 and 804.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,433.42 : 1,978.02 = 804.05 : x
2. Step 2: Convert to fraction form
   1,433.42/1,978.02 = 804.05/x
3. Step 3: Cross multiply
   1,433.42x = 1,978.02 × 804.05
4. Step 4: Simplify right side
   1,433.42x = 1,590,426.98
5. Step 5: Solve for x
   x = 1,590,426.98/1,433.42
6. Step 6: Final answer
   x = 1,109.53