Finding the Fourth Proportional to 2,338.78, 3,227.52 and 1,290.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,338.78 : 3,227.52 = 1,290.82 : x
2. Step 2: Convert to fraction form
   2,338.78/3,227.52 = 1,290.82/x
3. Step 3: Cross multiply
   2,338.78x = 3,227.52 × 1,290.82
4. Step 4: Simplify right side
   2,338.78x = 4,166,147.37
5. Step 5: Solve for x
   x = 4,166,147.37/2,338.78
6. Step 6: Final answer
   x = 1,781.33