Finding the Fourth Proportional to 2,158.75, 3,238.58 and 1,064.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,158.75 : 3,238.58 = 1,064.34 : x
2. Step 2: Convert to fraction form
   2,158.75/3,238.58 = 1,064.34/x
3. Step 3: Cross multiply
   2,158.75x = 3,238.58 × 1,064.34
4. Step 4: Simplify right side
   2,158.75x = 3,446,952.90
5. Step 5: Solve for x
   x = 3,446,952.90/2,158.75
6. Step 6: Final answer
   x = 1,596.73