Finding the Fourth Proportional to 2,160.86, 3,241.15 and 1,064.25

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.86 : 3,241.15 = 1,064.25 : x
2. Step 2: Convert to fraction form
   2,160.86/3,241.15 = 1,064.25/x
3. Step 3: Cross multiply
   2,160.86x = 3,241.15 × 1,064.25
4. Step 4: Simplify right side
   2,160.86x = 3,449,391.23
5. Step 5: Solve for x
   x = 3,449,391.23/2,160.86
6. Step 6: Final answer
   x = 1,596.31