Finding the Fourth Proportional to 1,408.83, 1,944.01 and 779.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.83 : 1,944.01 = 779.28 : x
2. Step 2: Convert to fraction form
   1,408.83/1,944.01 = 779.28/x
3. Step 3: Cross multiply
   1,408.83x = 1,944.01 × 779.28
4. Step 4: Simplify right side
   1,408.83x = 1,514,921.80
5. Step 5: Solve for x
   x = 1,514,921.80/1,408.83
6. Step 6: Final answer
   x = 1,075.31