Finding the Fourth Proportional to 1,986.27, 2,974.82 and 1,164.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.27 : 2,974.82 = 1,164.30 : x
2. Step 2: Convert to fraction form
   1,986.27/2,974.82 = 1,164.30/x
3. Step 3: Cross multiply
   1,986.27x = 2,974.82 × 1,164.30
4. Step 4: Simplify right side
   1,986.27x = 3,463,577.10
5. Step 5: Solve for x
   x = 3,463,577.10/1,986.27
6. Step 6: Final answer
   x = 1,743.76