Finding the Fourth Proportional to 2,431.20, 3,646.71 and 969.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,431.20 : 3,646.71 = 969.96 : x
2. Step 2: Convert to fraction form
   2,431.20/3,646.71 = 969.96/x
3. Step 3: Cross multiply
   2,431.20x = 3,646.71 × 969.96
4. Step 4: Simplify right side
   2,431.20x = 3,537,162.83
5. Step 5: Solve for x
   x = 3,537,162.83/2,431.20
6. Step 6: Final answer
   x = 1,454.90