Finding the Fourth Proportional to 1,408.99, 1,944.35 and 779.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.99 : 1,944.35 = 779.49 : x
2. Step 2: Convert to fraction form
   1,408.99/1,944.35 = 779.49/x
3. Step 3: Cross multiply
   1,408.99x = 1,944.35 × 779.49
4. Step 4: Simplify right side
   1,408.99x = 1,515,604.79
5. Step 5: Solve for x
   x = 1,515,604.79/1,408.99
6. Step 6: Final answer
   x = 1,075.67