Finding the Fourth Proportional to 2,665.05, 3,997.55 and 1,203.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,665.05 : 3,997.55 = 1,203.18 : x
2. Step 2: Convert to fraction form
   2,665.05/3,997.55 = 1,203.18/x
3. Step 3: Cross multiply
   2,665.05x = 3,997.55 × 1,203.18
4. Step 4: Simplify right side
   2,665.05x = 4,809,766.19
5. Step 5: Solve for x
   x = 4,809,766.19/2,665.05
6. Step 6: Final answer
   x = 1,804.76