Finding the Fourth Proportional to 2,338.82, 3,227.55 and 1,290.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,338.82 : 3,227.55 = 1,290.89 : x
2. Step 2: Convert to fraction form
   2,338.82/3,227.55 = 1,290.89/x
3. Step 3: Cross multiply
   2,338.82x = 3,227.55 × 1,290.89
4. Step 4: Simplify right side
   2,338.82x = 4,166,412.02
5. Step 5: Solve for x
   x = 4,166,412.02/2,338.82
6. Step 6: Final answer
   x = 1,781.42