Finding the Fourth Proportional to 1,403.19, 1,936.39 and 773.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.19 : 1,936.39 = 773.71 : x
2. Step 2: Convert to fraction form
   1,403.19/1,936.39 = 773.71/x
3. Step 3: Cross multiply
   1,403.19x = 1,936.39 × 773.71
4. Step 4: Simplify right side
   1,403.19x = 1,498,200.43
5. Step 5: Solve for x
   x = 1,498,200.43/1,403.19
6. Step 6: Final answer
   x = 1,067.71