Finding the Fourth Proportional to 2,103.37, 3,155.39 and 716.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,103.37 : 3,155.39 = 716.78 : x
2. Step 2: Convert to fraction form
   2,103.37/3,155.39 = 716.78/x
3. Step 3: Cross multiply
   2,103.37x = 3,155.39 × 716.78
4. Step 4: Simplify right side
   2,103.37x = 2,261,727.44
5. Step 5: Solve for x
   x = 2,261,727.44/2,103.37
6. Step 6: Final answer
   x = 1,075.29