Finding the Fourth Proportional to 2,644.02, 3,646.23 and 1,581.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,644.02 : 3,646.23 = 1,581.61 : x
2. Step 2: Convert to fraction form
   2,644.02/3,646.23 = 1,581.61/x
3. Step 3: Cross multiply
   2,644.02x = 3,646.23 × 1,581.61
4. Step 4: Simplify right side
   2,644.02x = 5,766,914.52
5. Step 5: Solve for x
   x = 5,766,914.52/2,644.02
6. Step 6: Final answer
   x = 2,181.12