Finding the Fourth Proportional to 2,637.69, 3,956.39 and 788.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,637.69 : 3,956.39 = 788.82 : x
2. Step 2: Convert to fraction form
   2,637.69/3,956.39 = 788.82/x
3. Step 3: Cross multiply
   2,637.69x = 3,956.39 × 788.82
4. Step 4: Simplify right side
   2,637.69x = 3,120,879.56
5. Step 5: Solve for x
   x = 3,120,879.56/2,637.69
6. Step 6: Final answer
   x = 1,183.19