Finding the Fourth Proportional to 1,724.28, 2,380.03 and 1,636.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,724.28 : 2,380.03 = 1,636.10 : x
2. Step 2: Convert to fraction form
   1,724.28/2,380.03 = 1,636.10/x
3. Step 3: Cross multiply
   1,724.28x = 2,380.03 × 1,636.10
4. Step 4: Simplify right side
   1,724.28x = 3,893,967.08
5. Step 5: Solve for x
   x = 3,893,967.08/1,724.28
6. Step 6: Final answer
   x = 2,258.31