Finding the Fourth Proportional to 1,346.72, 1,857.48 and 849.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.72 : 1,857.48 = 849.20 : x
2. Step 2: Convert to fraction form
   1,346.72/1,857.48 = 849.20/x
3. Step 3: Cross multiply
   1,346.72x = 1,857.48 × 849.20
4. Step 4: Simplify right side
   1,346.72x = 1,577,372.02
5. Step 5: Solve for x
   x = 1,577,372.02/1,346.72
6. Step 6: Final answer
   x = 1,171.27