Finding the Fourth Proportional to 1,512.16, 2,086.78 and 849.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,512.16 : 2,086.78 = 849.07 : x
2. Step 2: Convert to fraction form
   1,512.16/2,086.78 = 849.07/x
3. Step 3: Cross multiply
   1,512.16x = 2,086.78 × 849.07
4. Step 4: Simplify right side
   1,512.16x = 1,771,822.29
5. Step 5: Solve for x
   x = 1,771,822.29/1,512.16
6. Step 6: Final answer
   x = 1,171.72