Finding the Fourth Proportional to 2,116.14, 2,920.23 and 1,171.95

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.14 : 2,920.23 = 1,171.95 : x
2. Step 2: Convert to fraction form
   2,116.14/2,920.23 = 1,171.95/x
3. Step 3: Cross multiply
   2,116.14x = 2,920.23 × 1,171.95
4. Step 4: Simplify right side
   2,116.14x = 3,422,363.55
5. Step 5: Solve for x
   x = 3,422,363.55/2,116.14
6. Step 6: Final answer
   x = 1,617.27