Finding the Fourth Proportional to 2,431.09, 3,646.46 and 970.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.09 : 3,646.46 = 970.57 : x
2. Step 2: Convert to fraction form
   2,431.09/3,646.46 = 970.57/x
3. Step 3: Cross multiply
   2,431.09x = 3,646.46 × 970.57
4. Step 4: Simplify right side
   2,431.09x = 3,539,139.83
5. Step 5: Solve for x
   x = 3,539,139.83/2,431.09
6. Step 6: Final answer
   x = 1,455.78