Finding the Fourth Proportional to 1,513.88, 2,089.16 and 850.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.88 : 2,089.16 = 850.96 : x
2. Step 2: Convert to fraction form
   1,513.88/2,089.16 = 850.96/x
3. Step 3: Cross multiply
   1,513.88x = 2,089.16 × 850.96
4. Step 4: Simplify right side
   1,513.88x = 1,777,791.59
5. Step 5: Solve for x
   x = 1,777,791.59/1,513.88
6. Step 6: Final answer
   x = 1,174.33