Finding the Fourth Proportional to 1,608.73, 2,219.54 and 945.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.73 : 2,219.54 = 945.81 : x
2. Step 2: Convert to fraction form
   1,608.73/2,219.54 = 945.81/x
3. Step 3: Cross multiply
   1,608.73x = 2,219.54 × 945.81
4. Step 4: Simplify right side
   1,608.73x = 2,099,258.40
5. Step 5: Solve for x
   x = 2,099,258.40/1,608.73
6. Step 6: Final answer
   x = 1,304.92