Finding the Fourth Proportional to 2,158.62, 3,236.79 and 697.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.62 : 3,236.79 = 697.59 : x
2. Step 2: Convert to fraction form
   2,158.62/3,236.79 = 697.59/x
3. Step 3: Cross multiply
   2,158.62x = 3,236.79 × 697.59
4. Step 4: Simplify right side
   2,158.62x = 2,257,952.34
5. Step 5: Solve for x
   x = 2,257,952.34/2,158.62
6. Step 6: Final answer
   x = 1,046.02