Finding the Fourth Proportional to 1,406.34, 1,940.76 and 817.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,406.34 : 1,940.76 = 817.22 : x
2. Step 2: Convert to fraction form
   1,406.34/1,940.76 = 817.22/x
3. Step 3: Cross multiply
   1,406.34x = 1,940.76 × 817.22
4. Step 4: Simplify right side
   1,406.34x = 1,586,018.18
5. Step 5: Solve for x
   x = 1,586,018.18/1,406.34
6. Step 6: Final answer
   x = 1,127.76