Finding the Fourth Proportional to 2,958.72, 4,086.09 and 2,018.67

Step by Step Solution

1. Step 1: Write the proportion equation
   2,958.72 : 4,086.09 = 2,018.67 : x
2. Step 2: Convert to fraction form
   2,958.72/4,086.09 = 2,018.67/x
3. Step 3: Cross multiply
   2,958.72x = 4,086.09 × 2,018.67
4. Step 4: Simplify right side
   2,958.72x = 8,248,467.30
5. Step 5: Solve for x
   x = 8,248,467.30/2,958.72
6. Step 6: Final answer
   x = 2,787.85