Finding the Fourth Proportional to 2,635.28, 3,953.49 and 786.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.28 : 3,953.49 = 786.54 : x
2. Step 2: Convert to fraction form
   2,635.28/3,953.49 = 786.54/x
3. Step 3: Cross multiply
   2,635.28x = 3,953.49 × 786.54
4. Step 4: Simplify right side
   2,635.28x = 3,109,589.90
5. Step 5: Solve for x
   x = 3,109,589.90/2,635.28
6. Step 6: Final answer
   x = 1,179.99