Finding the Fourth Proportional to 1,662.20, 2,293.94 and 954.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,662.20 : 2,293.94 = 954.28 : x
2. Step 2: Convert to fraction form
   1,662.20/2,293.94 = 954.28/x
3. Step 3: Cross multiply
   1,662.20x = 2,293.94 × 954.28
4. Step 4: Simplify right side
   1,662.20x = 2,189,061.06
5. Step 5: Solve for x
   x = 2,189,061.06/1,662.20
6. Step 6: Final answer
   x = 1,316.97