Finding the Fourth Proportional to 1,786.97, 2,466.89 and 1,189.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,786.97 : 2,466.89 = 1,189.81 : x
2. Step 2: Convert to fraction form
   1,786.97/2,466.89 = 1,189.81/x
3. Step 3: Cross multiply
   1,786.97x = 2,466.89 × 1,189.81
4. Step 4: Simplify right side
   1,786.97x = 2,935,136.42
5. Step 5: Solve for x
   x = 2,935,136.42/1,786.97
6. Step 6: Final answer
   x = 1,642.52