Finding the Fourth Proportional to 2,603.82, 3,906.66 and 1,218.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,603.82 : 3,906.66 = 1,218.18 : x
2. Step 2: Convert to fraction form
   2,603.82/3,906.66 = 1,218.18/x
3. Step 3: Cross multiply
   2,603.82x = 3,906.66 × 1,218.18
4. Step 4: Simplify right side
   2,603.82x = 4,759,015.08
5. Step 5: Solve for x
   x = 4,759,015.08/2,603.82
6. Step 6: Final answer
   x = 1,827.71