Finding the Fourth Proportional to 2,958.72, 4,084.98 and 2,285.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,958.72 : 4,084.98 = 2,285.30 : x
2. Step 2: Convert to fraction form
   2,958.72/4,084.98 = 2,285.30/x
3. Step 3: Cross multiply
   2,958.72x = 4,084.98 × 2,285.30
4. Step 4: Simplify right side
   2,958.72x = 9,335,404.79
5. Step 5: Solve for x
   x = 9,335,404.79/2,958.72
6. Step 6: Final answer
   x = 3,155.22