Finding the Fourth Proportional to 2,112.10, 2,914.87 and 1,227.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.10 : 2,914.87 = 1,227.96 : x
2. Step 2: Convert to fraction form
   2,112.10/2,914.87 = 1,227.96/x
3. Step 3: Cross multiply
   2,112.10x = 2,914.87 × 1,227.96
4. Step 4: Simplify right side
   2,112.10x = 3,579,329.19
5. Step 5: Solve for x
   x = 3,579,329.19/2,112.10
6. Step 6: Final answer
   x = 1,694.68