Finding the Fourth Proportional to 1,601.85, 2,399.59 and 1,273.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,601.85 : 2,399.59 = 1,273.35 : x
2. Step 2: Convert to fraction form
   1,601.85/2,399.59 = 1,273.35/x
3. Step 3: Cross multiply
   1,601.85x = 2,399.59 × 1,273.35
4. Step 4: Simplify right side
   1,601.85x = 3,055,528.52
5. Step 5: Solve for x
   x = 3,055,528.52/1,601.85
6. Step 6: Final answer
   x = 1,907.50