Finding the Fourth Proportional to 2,190.30, 3,286.04 and 957.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,190.30 : 3,286.04 = 957.82 : x
2. Step 2: Convert to fraction form
   2,190.30/3,286.04 = 957.82/x
3. Step 3: Cross multiply
   2,190.30x = 3,286.04 × 957.82
4. Step 4: Simplify right side
   2,190.30x = 3,147,434.83
5. Step 5: Solve for x
   x = 3,147,434.83/2,190.30
6. Step 6: Final answer
   x = 1,436.99