Finding the Fourth Proportional to 1,383.44, 2,071.72 and 804.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,383.44 : 2,071.72 = 804.56 : x
2. Step 2: Convert to fraction form
   1,383.44/2,071.72 = 804.56/x
3. Step 3: Cross multiply
   1,383.44x = 2,071.72 × 804.56
4. Step 4: Simplify right side
   1,383.44x = 1,666,823.04
5. Step 5: Solve for x
   x = 1,666,823.04/1,383.44
6. Step 6: Final answer
   x = 1,204.84