Finding the Fourth Proportional to 2,736.86, 4,105.89 and 788.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,736.86 : 4,105.89 = 788.91 : x
2. Step 2: Convert to fraction form
   2,736.86/4,105.89 = 788.91/x
3. Step 3: Cross multiply
   2,736.86x = 4,105.89 × 788.91
4. Step 4: Simplify right side
   2,736.86x = 3,239,162.28
5. Step 5: Solve for x
   x = 3,239,162.28/2,736.86
6. Step 6: Final answer
   x = 1,183.53