Finding the Fourth Proportional to 2,105.26, 3,156.17 and 788.27

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105.26 : 3,156.17 = 788.27 : x
2. Step 2: Convert to fraction form
   2,105.26/3,156.17 = 788.27/x
3. Step 3: Cross multiply
   2,105.26x = 3,156.17 × 788.27
4. Step 4: Simplify right side
   2,105.26x = 2,487,927.68
5. Step 5: Solve for x
   x = 2,487,927.68/2,105.26
6. Step 6: Final answer
   x = 1,181.77