Finding the Fourth Proportional to 1,608.51, 2,219.52 and 945.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.51 : 2,219.52 = 945.72 : x
2. Step 2: Convert to fraction form
   1,608.51/2,219.52 = 945.72/x
3. Step 3: Cross multiply
   1,608.51x = 2,219.52 × 945.72
4. Step 4: Simplify right side
   1,608.51x = 2,099,044.45
5. Step 5: Solve for x
   x = 2,099,044.45/1,608.51
6. Step 6: Final answer
   x = 1,304.96