Finding the Fourth Proportional to 2,712.72, 3,740.58 and 2,151.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,712.72 : 3,740.58 = 2,151.30 : x
2. Step 2: Convert to fraction form
   2,712.72/3,740.58 = 2,151.30/x
3. Step 3: Cross multiply
   2,712.72x = 3,740.58 × 2,151.30
4. Step 4: Simplify right side
   2,712.72x = 8,047,109.75
5. Step 5: Solve for x
   x = 8,047,109.75/2,712.72
6. Step 6: Final answer
   x = 2,966.44