Finding the Fourth Proportional to 1,406.46, 1,940.94 and 776.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.46 : 1,940.94 = 776.96 : x
2. Step 2: Convert to fraction form
   1,406.46/1,940.94 = 776.96/x
3. Step 3: Cross multiply
   1,406.46x = 1,940.94 × 776.96
4. Step 4: Simplify right side
   1,406.46x = 1,508,032.74
5. Step 5: Solve for x
   x = 1,508,032.74/1,406.46
6. Step 6: Final answer
   x = 1,072.22