Finding the Fourth Proportional to 1,409.10, 1,944.51 and 779.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.10 : 1,944.51 = 779.62 : x
2. Step 2: Convert to fraction form
   1,409.10/1,944.51 = 779.62/x
3. Step 3: Cross multiply
   1,409.10x = 1,944.51 × 779.62
4. Step 4: Simplify right side
   1,409.10x = 1,515,978.89
5. Step 5: Solve for x
   x = 1,515,978.89/1,409.10
6. Step 6: Final answer
   x = 1,075.85