Finding the Fourth Proportional to 2,111.70, 2,914.26 and 1,227.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.70 : 2,914.26 = 1,227.96 : x
2. Step 2: Convert to fraction form
   2,111.70/2,914.26 = 1,227.96/x
3. Step 3: Cross multiply
   2,111.70x = 2,914.26 × 1,227.96
4. Step 4: Simplify right side
   2,111.70x = 3,578,594.71
5. Step 5: Solve for x
   x = 3,578,594.71/2,111.70
6. Step 6: Final answer
   x = 1,694.65