Finding the Fourth Proportional to 2,628.00, 3,942.75 and 779.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,628.00 : 3,942.75 = 779.15 : x
2. Step 2: Convert to fraction form
   2,628.00/3,942.75 = 779.15/x
3. Step 3: Cross multiply
   2,628.00x = 3,942.75 × 779.15
4. Step 4: Simplify right side
   2,628.00x = 3,072,006.44
5. Step 5: Solve for x
   x = 3,072,006.44/2,628.00
6. Step 6: Final answer
   x = 1,168.95