Finding the Fourth Proportional to 2,287.92, 3,432.72 and 971.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,287.92 : 3,432.72 = 971.96 : x
2. Step 2: Convert to fraction form
   2,287.92/3,432.72 = 971.96/x
3. Step 3: Cross multiply
   2,287.92x = 3,432.72 × 971.96
4. Step 4: Simplify right side
   2,287.92x = 3,336,466.53
5. Step 5: Solve for x
   x = 3,336,466.53/2,287.92
6. Step 6: Final answer
   x = 1,458.30