Finding the Fourth Proportional to 2,642.57, 3,963.94 and 793.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.57 : 3,963.94 = 793.50 : x
2. Step 2: Convert to fraction form
   2,642.57/3,963.94 = 793.50/x
3. Step 3: Cross multiply
   2,642.57x = 3,963.94 × 793.50
4. Step 4: Simplify right side
   2,642.57x = 3,145,369.54
5. Step 5: Solve for x
   x = 3,145,369.54/2,642.57
6. Step 6: Final answer
   x = 1,190.27