Finding the Fourth Proportional to 2,732.78, 3,771.18 and 1,490.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,732.78 : 3,771.18 = 1,490.78 : x
2. Step 2: Convert to fraction form
   2,732.78/3,771.18 = 1,490.78/x
3. Step 3: Cross multiply
   2,732.78x = 3,771.18 × 1,490.78
4. Step 4: Simplify right side
   2,732.78x = 5,621,999.72
5. Step 5: Solve for x
   x = 5,621,999.72/2,732.78
6. Step 6: Final answer
   x = 2,057.25