Finding the Fourth Proportional to 1,512.39, 2,086.89 and 849.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,512.39 : 2,086.89 = 849.23 : x
2. Step 2: Convert to fraction form
   1,512.39/2,086.89 = 849.23/x
3. Step 3: Cross multiply
   1,512.39x = 2,086.89 × 849.23
4. Step 4: Simplify right side
   1,512.39x = 1,772,249.59
5. Step 5: Solve for x
   x = 1,772,249.59/1,512.39
6. Step 6: Final answer
   x = 1,171.82