Finding the Fourth Proportional to 1,480.17, 2,042.58 and 817.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,480.17 : 2,042.58 = 817.05 : x
2. Step 2: Convert to fraction form
   1,480.17/2,042.58 = 817.05/x
3. Step 3: Cross multiply
   1,480.17x = 2,042.58 × 817.05
4. Step 4: Simplify right side
   1,480.17x = 1,668,900.71
5. Step 5: Solve for x
   x = 1,668,900.71/1,480.17
6. Step 6: Final answer
   x = 1,127.50