Finding the Fourth Proportional to 1,513.94, 2,088.72 and 850.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,513.94 : 2,088.72 = 850.65 : x
2. Step 2: Convert to fraction form
   1,513.94/2,088.72 = 850.65/x
3. Step 3: Cross multiply
   1,513.94x = 2,088.72 × 850.65
4. Step 4: Simplify right side
   1,513.94x = 1,776,765.03
5. Step 5: Solve for x
   x = 1,776,765.03/1,513.94
6. Step 6: Final answer
   x = 1,173.61