Finding the Fourth Proportional to 2,102.67, 2,901.72 and 1,171.17

Step by Step Solution

1. Step 1: Write the proportion equation
   2,102.67 : 2,901.72 = 1,171.17 : x
2. Step 2: Convert to fraction form
   2,102.67/2,901.72 = 1,171.17/x
3. Step 3: Cross multiply
   2,102.67x = 2,901.72 × 1,171.17
4. Step 4: Simplify right side
   2,102.67x = 3,398,407.41
5. Step 5: Solve for x
   x = 3,398,407.41/2,102.67
6. Step 6: Final answer
   x = 1,616.23