Finding the Fourth Proportional to 2,628.53, 3,941.42 and 779.39

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.53 : 3,941.42 = 779.39 : x
2. Step 2: Convert to fraction form
   2,628.53/3,941.42 = 779.39/x
3. Step 3: Cross multiply
   2,628.53x = 3,941.42 × 779.39
4. Step 4: Simplify right side
   2,628.53x = 3,071,915.14
5. Step 5: Solve for x
   x = 3,071,915.14/2,628.53
6. Step 6: Final answer
   x = 1,168.68