Finding the Fourth Proportional to 3,851.06, 5,314.52 and 2,172.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,851.06 : 5,314.52 = 2,172.54 : x
2. Step 2: Convert to fraction form
   3,851.06/5,314.52 = 2,172.54/x
3. Step 3: Cross multiply
   3,851.06x = 5,314.52 × 2,172.54
4. Step 4: Simplify right side
   3,851.06x = 11,545,996.42
5. Step 5: Solve for x
   x = 11,545,996.42/3,851.06
6. Step 6: Final answer
   x = 2,998.14