Finding the Fourth Proportional to 1,338.33, 1,846.90 and 779.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338.33 : 1,846.90 = 779.18 : x
2. Step 2: Convert to fraction form
   1,338.33/1,846.90 = 779.18/x
3. Step 3: Cross multiply
   1,338.33x = 1,846.90 × 779.18
4. Step 4: Simplify right side
   1,338.33x = 1,439,067.54
5. Step 5: Solve for x
   x = 1,439,067.54/1,338.33
6. Step 6: Final answer
   x = 1,075.27