Finding the Fourth Proportional to 2,338.34, 3,227.08 and 1,290.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,338.34 : 3,227.08 = 1,290.42 : x
2. Step 2: Convert to fraction form
   2,338.34/3,227.08 = 1,290.42/x
3. Step 3: Cross multiply
   2,338.34x = 3,227.08 × 1,290.42
4. Step 4: Simplify right side
   2,338.34x = 4,164,288.57
5. Step 5: Solve for x
   x = 4,164,288.57/2,338.34
6. Step 6: Final answer
   x = 1,780.87