Finding the Fourth Proportional to 2,315.31, 3,194.53 and 1,724.82

Step by Step Solution

1. Step 1: Write the proportion equation
   2,315.31 : 3,194.53 = 1,724.82 : x
2. Step 2: Convert to fraction form
   2,315.31/3,194.53 = 1,724.82/x
3. Step 3: Cross multiply
   2,315.31x = 3,194.53 × 1,724.82
4. Step 4: Simplify right side
   2,315.31x = 5,509,989.23
5. Step 5: Solve for x
   x = 5,509,989.23/2,315.31
6. Step 6: Final answer
   x = 2,379.81