Finding the Fourth Proportional to 1,513.71, 2,088.55 and 850.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.71 : 2,088.55 = 850.39 : x
2. Step 2: Convert to fraction form
   1,513.71/2,088.55 = 850.39/x
3. Step 3: Cross multiply
   1,513.71x = 2,088.55 × 850.39
4. Step 4: Simplify right side
   1,513.71x = 1,776,082.03
5. Step 5: Solve for x
   x = 1,776,082.03/1,513.71
6. Step 6: Final answer
   x = 1,173.33