Finding the Fourth Proportional to 1,269.83, 1,751.38 and 850.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,269.83 : 1,751.38 = 850.05 : x
2. Step 2: Convert to fraction form
   1,269.83/1,751.38 = 850.05/x
3. Step 3: Cross multiply
   1,269.83x = 1,751.38 × 850.05
4. Step 4: Simplify right side
   1,269.83x = 1,488,760.57
5. Step 5: Solve for x
   x = 1,488,760.57/1,269.83
6. Step 6: Final answer
   x = 1,172.41