Finding the Fourth Proportional to 2,114.97, 3,172.45 and 1,018.77

Step by Step Solution

1. Step 1: Write the proportion equation
   2,114.97 : 3,172.45 = 1,018.77 : x
2. Step 2: Convert to fraction form
   2,114.97/3,172.45 = 1,018.77/x
3. Step 3: Cross multiply
   2,114.97x = 3,172.45 × 1,018.77
4. Step 4: Simplify right side
   2,114.97x = 3,231,996.89
5. Step 5: Solve for x
   x = 3,231,996.89/2,114.97
6. Step 6: Final answer
   x = 1,528.15