Finding the Fourth Proportional to 2,112.17, 3,169.11 and 1,017.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,112.17 : 3,169.11 = 1,017.50 : x
2. Step 2: Convert to fraction form
   2,112.17/3,169.11 = 1,017.50/x
3. Step 3: Cross multiply
   2,112.17x = 3,169.11 × 1,017.50
4. Step 4: Simplify right side
   2,112.17x = 3,224,569.43
5. Step 5: Solve for x
   x = 3,224,569.43/2,112.17
6. Step 6: Final answer
   x = 1,526.66