Finding the Fourth Proportional to 1,409.05, 1,944.62 and 779.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.05 : 1,944.62 = 779.73 : x
2. Step 2: Convert to fraction form
   1,409.05/1,944.62 = 779.73/x
3. Step 3: Cross multiply
   1,409.05x = 1,944.62 × 779.73
4. Step 4: Simplify right side
   1,409.05x = 1,516,278.55
5. Step 5: Solve for x
   x = 1,516,278.55/1,409.05
6. Step 6: Final answer
   x = 1,076.10