Finding the Fourth Proportional to 2,012.16, 3,013.12 and 1,144.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.16 : 3,013.12 = 1,144.96 : x
2. Step 2: Convert to fraction form
   2,012.16/3,013.12 = 1,144.96/x
3. Step 3: Cross multiply
   2,012.16x = 3,013.12 × 1,144.96
4. Step 4: Simplify right side
   2,012.16x = 3,449,901.88
5. Step 5: Solve for x
   x = 3,449,901.88/2,012.16
6. Step 6: Final answer
   x = 1,714.53