Finding the Fourth Proportional to 2,448.05, 3,665.59 and 1,290.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,448.05 : 3,665.59 = 1,290.29 : x
2. Step 2: Convert to fraction form
   2,448.05/3,665.59 = 1,290.29/x
3. Step 3: Cross multiply
   2,448.05x = 3,665.59 × 1,290.29
4. Step 4: Simplify right side
   2,448.05x = 4,729,674.12
5. Step 5: Solve for x
   x = 4,729,674.12/2,448.05
6. Step 6: Final answer
   x = 1,932.02