Finding the Fourth Proportional to 3,634.74, 5,015.79 and 2,142.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,634.74 : 5,015.79 = 2,142.72 : x
2. Step 2: Convert to fraction form
   3,634.74/5,015.79 = 2,142.72/x
3. Step 3: Cross multiply
   3,634.74x = 5,015.79 × 2,142.72
4. Step 4: Simplify right side
   3,634.74x = 10,747,433.55
5. Step 5: Solve for x
   x = 10,747,433.55/3,634.74
6. Step 6: Final answer
   x = 2,956.86