Finding the Fourth Proportional to 2,117.62, 2,922.33 and 1,186.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,117.62 : 2,922.33 = 1,186.18 : x
2. Step 2: Convert to fraction form
   2,117.62/2,922.33 = 1,186.18/x
3. Step 3: Cross multiply
   2,117.62x = 2,922.33 × 1,186.18
4. Step 4: Simplify right side
   2,117.62x = 3,466,409.40
5. Step 5: Solve for x
   x = 3,466,409.40/2,117.62
6. Step 6: Final answer
   x = 1,636.94