Finding the Fourth Proportional to 1,446.87, 1,996.74 and 817.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,446.87 : 1,996.74 = 817.50 : x
2. Step 2: Convert to fraction form
   1,446.87/1,996.74 = 817.50/x
3. Step 3: Cross multiply
   1,446.87x = 1,996.74 × 817.50
4. Step 4: Simplify right side
   1,446.87x = 1,632,334.95
5. Step 5: Solve for x
   x = 1,632,334.95/1,446.87
6. Step 6: Final answer
   x = 1,128.18