Finding the Fourth Proportional to 2,112.46, 2,914.72 and 1,227.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.46 : 2,914.72 = 1,227.80 : x
2. Step 2: Convert to fraction form
   2,112.46/2,914.72 = 1,227.80/x
3. Step 3: Cross multiply
   2,112.46x = 2,914.72 × 1,227.80
4. Step 4: Simplify right side
   2,112.46x = 3,578,693.22
5. Step 5: Solve for x
   x = 3,578,693.22/2,112.46
6. Step 6: Final answer
   x = 1,694.09