Finding the Fourth Proportional to 1,513.81, 2,089.02 and 850.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.81 : 2,089.02 = 850.69 : x
2. Step 2: Convert to fraction form
   1,513.81/2,089.02 = 850.69/x
3. Step 3: Cross multiply
   1,513.81x = 2,089.02 × 850.69
4. Step 4: Simplify right side
   1,513.81x = 1,777,108.42
5. Step 5: Solve for x
   x = 1,777,108.42/1,513.81
6. Step 6: Final answer
   x = 1,173.93