Finding the Fourth Proportional to 2,874.56, 3,962.32 and 2,174.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,874.56 : 3,962.32 = 2,174.72 : x
2. Step 2: Convert to fraction form
   2,874.56/3,962.32 = 2,174.72/x
3. Step 3: Cross multiply
   2,874.56x = 3,962.32 × 2,174.72
4. Step 4: Simplify right side
   2,874.56x = 8,616,911.30
5. Step 5: Solve for x
   x = 8,616,911.30/2,874.56
6. Step 6: Final answer
   x = 2,997.65