Finding the Fourth Proportional to 2,431.42, 3,648.61 and 970.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.42 : 3,648.61 = 970.45 : x
2. Step 2: Convert to fraction form
   2,431.42/3,648.61 = 970.45/x
3. Step 3: Cross multiply
   2,431.42x = 3,648.61 × 970.45
4. Step 4: Simplify right side
   2,431.42x = 3,540,806.19
5. Step 5: Solve for x
   x = 3,540,806.19/2,431.42
6. Step 6: Final answer
   x = 1,456.27