Finding the Fourth Proportional to 2,116.62, 2,920.95 and 1,185.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.62 : 2,920.95 = 1,185.18 : x
2. Step 2: Convert to fraction form
   2,116.62/2,920.95 = 1,185.18/x
3. Step 3: Cross multiply
   2,116.62x = 2,920.95 × 1,185.18
4. Step 4: Simplify right side
   2,116.62x = 3,461,851.52
5. Step 5: Solve for x
   x = 3,461,851.52/2,116.62
6. Step 6: Final answer
   x = 1,635.56