Finding the Fourth Proportional to 2,012.49, 3,014.37 and 1,661.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.49 : 3,014.37 = 1,661.90 : x
2. Step 2: Convert to fraction form
   2,012.49/3,014.37 = 1,661.90/x
3. Step 3: Cross multiply
   2,012.49x = 3,014.37 × 1,661.90
4. Step 4: Simplify right side
   2,012.49x = 5,009,566.43
5. Step 5: Solve for x
   x = 5,009,566.43/2,012.49
6. Step 6: Final answer
   x = 2,489.24