Finding the Fourth Proportional to 1,723.37, 2,585.61 and 1,539.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,723.37 : 2,585.61 = 1,539.59 : x
2. Step 2: Convert to fraction form
   1,723.37/2,585.61 = 1,539.59/x
3. Step 3: Cross multiply
   1,723.37x = 2,585.61 × 1,539.59
4. Step 4: Simplify right side
   1,723.37x = 3,980,766.37
5. Step 5: Solve for x
   x = 3,980,766.37/1,723.37
6. Step 6: Final answer
   x = 2,309.88