Finding the Fourth Proportional to 2,391.82, 3,589.39 and 930.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.82 : 3,589.39 = 930.98 : x
2. Step 2: Convert to fraction form
   2,391.82/3,589.39 = 930.98/x
3. Step 3: Cross multiply
   2,391.82x = 3,589.39 × 930.98
4. Step 4: Simplify right side
   2,391.82x = 3,341,645.65
5. Step 5: Solve for x
   x = 3,341,645.65/2,391.82
6. Step 6: Final answer
   x = 1,397.11