Finding the Fourth Proportional to 2,851.89, 3,937.41 and 2,187.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,851.89 : 3,937.41 = 2,187.47 : x
2. Step 2: Convert to fraction form
   2,851.89/3,937.41 = 2,187.47/x
3. Step 3: Cross multiply
   2,851.89x = 3,937.41 × 2,187.47
4. Step 4: Simplify right side
   2,851.89x = 8,612,946.57
5. Step 5: Solve for x
   x = 8,612,946.57/2,851.89
6. Step 6: Final answer
   x = 3,020.08