Finding the Fourth Proportional to 1,313.16, 1,968.72 and 849.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,313.16 : 1,968.72 = 849.96 : x
2. Step 2: Convert to fraction form
   1,313.16/1,968.72 = 849.96/x
3. Step 3: Cross multiply
   1,313.16x = 1,968.72 × 849.96
4. Step 4: Simplify right side
   1,313.16x = 1,673,333.25
5. Step 5: Solve for x
   x = 1,673,333.25/1,313.16
6. Step 6: Final answer
   x = 1,274.28