Finding the Fourth Proportional to 1,513.86, 2,089.23 and 850.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.86 : 2,089.23 = 850.84 : x
2. Step 2: Convert to fraction form
   1,513.86/2,089.23 = 850.84/x
3. Step 3: Cross multiply
   1,513.86x = 2,089.23 × 850.84
4. Step 4: Simplify right side
   1,513.86x = 1,777,592.04
5. Step 5: Solve for x
   x = 1,777,592.04/1,513.86
6. Step 6: Final answer
   x = 1,174.21