Finding the Fourth Proportional to 2,120.27, 3,181.22 and 1,196.87

Step by Step Solution

1. Step 1: Write the proportion equation
   2,120.27 : 3,181.22 = 1,196.87 : x
2. Step 2: Convert to fraction form
   2,120.27/3,181.22 = 1,196.87/x
3. Step 3: Cross multiply
   2,120.27x = 3,181.22 × 1,196.87
4. Step 4: Simplify right side
   2,120.27x = 3,807,500.80
5. Step 5: Solve for x
   x = 3,807,500.80/2,120.27
6. Step 6: Final answer
   x = 1,795.76