Finding the Fourth Proportional to 1,321.63, 1,822.98 and 849.67

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321.63 : 1,822.98 = 849.67 : x
2. Step 2: Convert to fraction form
   1,321.63/1,822.98 = 849.67/x
3. Step 3: Cross multiply
   1,321.63x = 1,822.98 × 849.67
4. Step 4: Simplify right side
   1,321.63x = 1,548,931.42
5. Step 5: Solve for x
   x = 1,548,931.42/1,321.63
6. Step 6: Final answer
   x = 1,171.99