Finding the Fourth Proportional to 1,403.58, 1,936.78 and 806.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.58 : 1,936.78 = 806.04 : x
2. Step 2: Convert to fraction form
   1,403.58/1,936.78 = 806.04/x
3. Step 3: Cross multiply
   1,403.58x = 1,936.78 × 806.04
4. Step 4: Simplify right side
   1,403.58x = 1,561,122.15
5. Step 5: Solve for x
   x = 1,561,122.15/1,403.58
6. Step 6: Final answer
   x = 1,112.24