Finding the Fourth Proportional to 2,160.21, 3,241.53 and 1,005.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,160.21 : 3,241.53 = 1,005.96 : x
2. Step 2: Convert to fraction form
   2,160.21/3,241.53 = 1,005.96/x
3. Step 3: Cross multiply
   2,160.21x = 3,241.53 × 1,005.96
4. Step 4: Simplify right side
   2,160.21x = 3,260,849.52
5. Step 5: Solve for x
   x = 3,260,849.52/2,160.21
6. Step 6: Final answer
   x = 1,509.51