Finding the Fourth Proportional to 1,403.43, 1,936.86 and 806.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.43 : 1,936.86 = 806.00 : x
2. Step 2: Convert to fraction form
   1,403.43/1,936.86 = 806.00/x
3. Step 3: Cross multiply
   1,403.43x = 1,936.86 × 806.00
4. Step 4: Simplify right side
   1,403.43x = 1,561,104.17
5. Step 5: Solve for x
   x = 1,561,104.17/1,403.43
6. Step 6: Final answer
   x = 1,112.35