Finding the Fourth Proportional to 2,116.92, 2,921.35 and 1,185.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,116.92 : 2,921.35 = 1,185.42 : x
2. Step 2: Convert to fraction form
   2,116.92/2,921.35 = 1,185.42/x
3. Step 3: Cross multiply
   2,116.92x = 2,921.35 × 1,185.42
4. Step 4: Simplify right side
   2,116.92x = 3,463,026.72
5. Step 5: Solve for x
   x = 3,463,026.72/2,116.92
6. Step 6: Final answer
   x = 1,635.88