Finding the Fourth Proportional to 2,101.84, 2,897.37 and 1,728.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,101.84 : 2,897.37 = 1,728.17 : x
2. Step 2: Convert to fraction form
   2,101.84/2,897.37 = 1,728.17/x
3. Step 3: Cross multiply
   2,101.84x = 2,897.37 × 1,728.17
4. Step 4: Simplify right side
   2,101.84x = 5,007,139.43
5. Step 5: Solve for x
   x = 5,007,139.43/2,101.84
6. Step 6: Final answer
   x = 2,382.27