Finding the Fourth Proportional to 2,016.47, 3,001.40 and 1,971.11

Step by Step Solution

1. Step 1: Write the proportion equation
   2,016.47 : 3,001.40 = 1,971.11 : x
2. Step 2: Convert to fraction form
   2,016.47/3,001.40 = 1,971.11/x
3. Step 3: Cross multiply
   2,016.47x = 3,001.40 × 1,971.11
4. Step 4: Simplify right side
   2,016.47x = 5,916,089.55
5. Step 5: Solve for x
   x = 5,916,089.55/2,016.47
6. Step 6: Final answer
   x = 2,933.88