Finding the Fourth Proportional to 1,409.42, 1,945.06 and 779.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,409.42 : 1,945.06 = 779.96 : x
2. Step 2: Convert to fraction form
   1,409.42/1,945.06 = 779.96/x
3. Step 3: Cross multiply
   1,409.42x = 1,945.06 × 779.96
4. Step 4: Simplify right side
   1,409.42x = 1,517,069.00
5. Step 5: Solve for x
   x = 1,517,069.00/1,409.42
6. Step 6: Final answer
   x = 1,076.38