Finding the Fourth Proportional to 1,986.24, 2,740.57 and 1,146.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.24 : 2,740.57 = 1,146.89 : x
2. Step 2: Convert to fraction form
   1,986.24/2,740.57 = 1,146.89/x
3. Step 3: Cross multiply
   1,986.24x = 2,740.57 × 1,146.89
4. Step 4: Simplify right side
   1,986.24x = 3,143,120.90
5. Step 5: Solve for x
   x = 3,143,120.90/1,986.24
6. Step 6: Final answer
   x = 1,582.45