Finding the Fourth Proportional to 1,408.98, 1,944.38 and 779.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.98 : 1,944.38 = 779.51 : x
2. Step 2: Convert to fraction form
   1,408.98/1,944.38 = 779.51/x
3. Step 3: Cross multiply
   1,408.98x = 1,944.38 × 779.51
4. Step 4: Simplify right side
   1,408.98x = 1,515,657.33
5. Step 5: Solve for x
   x = 1,515,657.33/1,408.98
6. Step 6: Final answer
   x = 1,075.71