Finding the Fourth Proportional to 2,012.12, 3,016.08 and 1,087.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.12 : 3,016.08 = 1,087.46 : x
2. Step 2: Convert to fraction form
   2,012.12/3,016.08 = 1,087.46/x
3. Step 3: Cross multiply
   2,012.12x = 3,016.08 × 1,087.46
4. Step 4: Simplify right side
   2,012.12x = 3,279,851.28
5. Step 5: Solve for x
   x = 3,279,851.28/2,012.12
6. Step 6: Final answer
   x = 1,630.05