Finding the Fourth Proportional to 1,614.31, 2,228.81 and 1,240.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,614.31 : 2,228.81 = 1,240.60 : x
2. Step 2: Convert to fraction form
   1,614.31/2,228.81 = 1,240.60/x
3. Step 3: Cross multiply
   1,614.31x = 2,228.81 × 1,240.60
4. Step 4: Simplify right side
   1,614.31x = 2,765,061.69
5. Step 5: Solve for x
   x = 2,765,061.69/1,614.31
6. Step 6: Final answer
   x = 1,712.84