Finding the Fourth Proportional to 2,153.96, 3,229.68 and 1,541.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,153.96 : 3,229.68 = 1,541.60 : x
2. Step 2: Convert to fraction form
   2,153.96/3,229.68 = 1,541.60/x
3. Step 3: Cross multiply
   2,153.96x = 3,229.68 × 1,541.60
4. Step 4: Simplify right side
   2,153.96x = 4,978,874.69
5. Step 5: Solve for x
   x = 4,978,874.69/2,153.96
6. Step 6: Final answer
   x = 2,311.50