Finding the Fourth Proportional to 1,608.04, 2,219.32 and 945.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.04 : 2,219.32 = 945.12 : x
2. Step 2: Convert to fraction form
   1,608.04/2,219.32 = 945.12/x
3. Step 3: Cross multiply
   1,608.04x = 2,219.32 × 945.12
4. Step 4: Simplify right side
   1,608.04x = 2,097,523.72
5. Step 5: Solve for x
   x = 2,097,523.72/1,608.04
6. Step 6: Final answer
   x = 1,304.40