Finding the Fourth Proportional to 1,513.86, 2,089.17 and 850.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.86 : 2,089.17 = 850.77 : x
2. Step 2: Convert to fraction form
   1,513.86/2,089.17 = 850.77/x
3. Step 3: Cross multiply
   1,513.86x = 2,089.17 × 850.77
4. Step 4: Simplify right side
   1,513.86x = 1,777,398.91
5. Step 5: Solve for x
   x = 1,777,398.91/1,513.86
6. Step 6: Final answer
   x = 1,174.09