Finding the Fourth Proportional to 1,608.36, 2,408.89 and 957.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,608.36 : 2,408.89 = 957.72 : x
2. Step 2: Convert to fraction form
   1,608.36/2,408.89 = 957.72/x
3. Step 3: Cross multiply
   1,608.36x = 2,408.89 × 957.72
4. Step 4: Simplify right side
   1,608.36x = 2,307,050.57
5. Step 5: Solve for x
   x = 2,307,050.57/1,608.36
6. Step 6: Final answer
   x = 1,434.42