Finding the Fourth Proportional to 1,480.27, 2,042.78 and 817.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,480.27 : 2,042.78 = 817.17 : x
2. Step 2: Convert to fraction form
   1,480.27/2,042.78 = 817.17/x
3. Step 3: Cross multiply
   1,480.27x = 2,042.78 × 817.17
4. Step 4: Simplify right side
   1,480.27x = 1,669,298.53
5. Step 5: Solve for x
   x = 1,669,298.53/1,480.27
6. Step 6: Final answer
   x = 1,127.70