Finding the Fourth Proportional to 2,411.86, 3,617.65 and 851.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,411.86 : 3,617.65 = 851.94 : x
2. Step 2: Convert to fraction form
   2,411.86/3,617.65 = 851.94/x
3. Step 3: Cross multiply
   2,411.86x = 3,617.65 × 851.94
4. Step 4: Simplify right side
   2,411.86x = 3,082,020.74
5. Step 5: Solve for x
   x = 3,082,020.74/2,411.86
6. Step 6: Final answer
   x = 1,277.86