Finding the Fourth Proportional to 3,171.15, 4,748.52 and 2,072.18

Step by Step Solution

1. Step 1: Write the proportion equation
   3,171.15 : 4,748.52 = 2,072.18 : x
2. Step 2: Convert to fraction form
   3,171.15/4,748.52 = 2,072.18/x
3. Step 3: Cross multiply
   3,171.15x = 4,748.52 × 2,072.18
4. Step 4: Simplify right side
   3,171.15x = 9,839,807.82
5. Step 5: Solve for x
   x = 9,839,807.82/3,171.15
6. Step 6: Final answer
   x = 3,102.91