Finding the Fourth Proportional to 2,321.55, 3,203.60 and 1,273.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,321.55 : 3,203.60 = 1,273.61 : x
2. Step 2: Convert to fraction form
   2,321.55/3,203.60 = 1,273.61/x
3. Step 3: Cross multiply
   2,321.55x = 3,203.60 × 1,273.61
4. Step 4: Simplify right side
   2,321.55x = 4,080,114.61
5. Step 5: Solve for x
   x = 4,080,114.61/2,321.55
6. Step 6: Final answer
   x = 1,757.50