Finding the Fourth Proportional to 1,945.87, 2,917.17 and 849.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.87 : 2,917.17 = 849.42 : x
2. Step 2: Convert to fraction form
   1,945.87/2,917.17 = 849.42/x
3. Step 3: Cross multiply
   1,945.87x = 2,917.17 × 849.42
4. Step 4: Simplify right side
   1,945.87x = 2,477,902.54
5. Step 5: Solve for x
   x = 2,477,902.54/1,945.87
6. Step 6: Final answer
   x = 1,273.42