Finding the Fourth Proportional to 2,172.38, 3,259.05 and 1,017.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,172.38 : 3,259.05 = 1,017.50 : x
2. Step 2: Convert to fraction form
   2,172.38/3,259.05 = 1,017.50/x
3. Step 3: Cross multiply
   2,172.38x = 3,259.05 × 1,017.50
4. Step 4: Simplify right side
   2,172.38x = 3,316,083.38
5. Step 5: Solve for x
   x = 3,316,083.38/2,172.38
6. Step 6: Final answer
   x = 1,526.47