Finding the Fourth Proportional to 2,628.81, 3,941.82 and 779.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.81 : 3,941.82 = 779.49 : x
2. Step 2: Convert to fraction form
   2,628.81/3,941.82 = 779.49/x
3. Step 3: Cross multiply
   2,628.81x = 3,941.82 × 779.49
4. Step 4: Simplify right side
   2,628.81x = 3,072,609.27
5. Step 5: Solve for x
   x = 3,072,609.27/2,628.81
6. Step 6: Final answer
   x = 1,168.82