Finding the Fourth Proportional to 1,986.30, 2,978.30 and 1,162.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,986.30 : 2,978.30 = 1,162.84 : x
2. Step 2: Convert to fraction form
   1,986.30/2,978.30 = 1,162.84/x
3. Step 3: Cross multiply
   1,986.30x = 2,978.30 × 1,162.84
4. Step 4: Simplify right side
   1,986.30x = 3,463,286.37
5. Step 5: Solve for x
   x = 3,463,286.37/1,986.30
6. Step 6: Final answer
   x = 1,743.59