Finding the Fourth Proportional to 1,724.49, 2,380.52 and 1,165.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,724.49 : 2,380.52 = 1,165.71 : x
2. Step 2: Convert to fraction form
   1,724.49/2,380.52 = 1,165.71/x
3. Step 3: Cross multiply
   1,724.49x = 2,380.52 × 1,165.71
4. Step 4: Simplify right side
   1,724.49x = 2,774,990.14
5. Step 5: Solve for x
   x = 2,774,990.14/1,724.49
6. Step 6: Final answer
   x = 1,609.17