Finding the Fourth Proportional to 2,158.58, 3,238.17 and 697.26

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.58 : 3,238.17 = 697.26 : x
2. Step 2: Convert to fraction form
   2,158.58/3,238.17 = 697.26/x
3. Step 3: Cross multiply
   2,158.58x = 3,238.17 × 697.26
4. Step 4: Simplify right side
   2,158.58x = 2,257,846.41
5. Step 5: Solve for x
   x = 2,257,846.41/2,158.58
6. Step 6: Final answer
   x = 1,045.99