Finding the Fourth Proportional to 2,635.42, 3,952.45 and 786.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,635.42 : 3,952.45 = 786.06 : x
2. Step 2: Convert to fraction form
   2,635.42/3,952.45 = 786.06/x
3. Step 3: Cross multiply
   2,635.42x = 3,952.45 × 786.06
4. Step 4: Simplify right side
   2,635.42x = 3,106,862.85
5. Step 5: Solve for x
   x = 3,106,862.85/2,635.42
6. Step 6: Final answer
   x = 1,178.89