Finding the Fourth Proportional to 1,936.24, 2,661.73 and 1,666.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,936.24 : 2,661.73 = 1,666.07 : x
2. Step 2: Convert to fraction form
   1,936.24/2,661.73 = 1,666.07/x
3. Step 3: Cross multiply
   1,936.24x = 2,661.73 × 1,666.07
4. Step 4: Simplify right side
   1,936.24x = 4,434,628.50
5. Step 5: Solve for x
   x = 4,434,628.50/1,936.24
6. Step 6: Final answer
   x = 2,290.33