Finding the Fourth Proportional to 1,661.37, 2,487.15 and 1,456.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661.37 : 2,487.15 = 1,456.34 : x
2. Step 2: Convert to fraction form
   1,661.37/2,487.15 = 1,456.34/x
3. Step 3: Cross multiply
   1,661.37x = 2,487.15 × 1,456.34
4. Step 4: Simplify right side
   1,661.37x = 3,622,123.60
5. Step 5: Solve for x
   x = 3,622,123.60/1,661.37
6. Step 6: Final answer
   x = 2,180.20