Finding the Fourth Proportional to 2,628.53, 3,943.18 and 779.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.53 : 3,943.18 = 779.42 : x
2. Step 2: Convert to fraction form
   2,628.53/3,943.18 = 779.42/x
3. Step 3: Cross multiply
   2,628.53x = 3,943.18 × 779.42
4. Step 4: Simplify right side
   2,628.53x = 3,073,404.19
5. Step 5: Solve for x
   x = 3,073,404.19/2,628.53
6. Step 6: Final answer
   x = 1,169.25