Finding the Fourth Proportional to 2,111.81, 2,914.07 and 1,227.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.81 : 2,914.07 = 1,227.48 : x
2. Step 2: Convert to fraction form
   2,111.81/2,914.07 = 1,227.48/x
3. Step 3: Cross multiply
   2,111.81x = 2,914.07 × 1,227.48
4. Step 4: Simplify right side
   2,111.81x = 3,576,956.51
5. Step 5: Solve for x
   x = 3,576,956.51/2,111.81
6. Step 6: Final answer
   x = 1,693.79