Finding the Fourth Proportional to 1,403.42, 1,936.68 and 806.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.42 : 1,936.68 = 806.02 : x
2. Step 2: Convert to fraction form
   1,403.42/1,936.68 = 806.02/x
3. Step 3: Cross multiply
   1,403.42x = 1,936.68 × 806.02
4. Step 4: Simplify right side
   1,403.42x = 1,561,002.81
5. Step 5: Solve for x
   x = 1,561,002.81/1,403.42
6. Step 6: Final answer
   x = 1,112.28