Finding the Fourth Proportional to 1,513.91, 2,089.22 and 850.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.91 : 2,089.22 = 850.79 : x
2. Step 2: Convert to fraction form
   1,513.91/2,089.22 = 850.79/x
3. Step 3: Cross multiply
   1,513.91x = 2,089.22 × 850.79
4. Step 4: Simplify right side
   1,513.91x = 1,777,472.78
5. Step 5: Solve for x
   x = 1,777,472.78/1,513.91
6. Step 6: Final answer
   x = 1,174.10