Finding the Fourth Proportional to 2,634.87, 3,952.34 and 786.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,634.87 : 3,952.34 = 786.05 : x
2. Step 2: Convert to fraction form
   2,634.87/3,952.34 = 786.05/x
3. Step 3: Cross multiply
   2,634.87x = 3,952.34 × 786.05
4. Step 4: Simplify right side
   2,634.87x = 3,106,736.86
5. Step 5: Solve for x
   x = 3,106,736.86/2,634.87
6. Step 6: Final answer
   x = 1,179.09