Finding the Fourth Proportional to 2,389.17, 3,581.60 and 849.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,389.17 : 3,581.60 = 849.81 : x
2. Step 2: Convert to fraction form
   2,389.17/3,581.60 = 849.81/x
3. Step 3: Cross multiply
   2,389.17x = 3,581.60 × 849.81
4. Step 4: Simplify right side
   2,389.17x = 3,043,693.46
5. Step 5: Solve for x
   x = 3,043,693.46/2,389.17
6. Step 6: Final answer
   x = 1,273.95