Finding the Fourth Proportional to 2,012.48, 3,014.38 and 1,661.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.48 : 3,014.38 = 1,661.88 : x
2. Step 2: Convert to fraction form
   2,012.48/3,014.38 = 1,661.88/x
3. Step 3: Cross multiply
   2,012.48x = 3,014.38 × 1,661.88
4. Step 4: Simplify right side
   2,012.48x = 5,009,537.83
5. Step 5: Solve for x
   x = 5,009,537.83/2,012.48
6. Step 6: Final answer
   x = 2,489.24