Finding the Fourth Proportional to 1,322.72, 1,826.20 and 850.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,322.72 : 1,826.20 = 850.84 : x
2. Step 2: Convert to fraction form
   1,322.72/1,826.20 = 850.84/x
3. Step 3: Cross multiply
   1,322.72x = 1,826.20 × 850.84
4. Step 4: Simplify right side
   1,322.72x = 1,553,804.01
5. Step 5: Solve for x
   x = 1,553,804.01/1,322.72
6. Step 6: Final answer
   x = 1,174.70