Finding the Fourth Proportional to 1,409.19, 1,944.68 and 779.68

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.19 : 1,944.68 = 779.68 : x
2. Step 2: Convert to fraction form
   1,409.19/1,944.68 = 779.68/x
3. Step 3: Cross multiply
   1,409.19x = 1,944.68 × 779.68
4. Step 4: Simplify right side
   1,409.19x = 1,516,228.10
5. Step 5: Solve for x
   x = 1,516,228.10/1,409.19
6. Step 6: Final answer
   x = 1,075.96