Finding the Fourth Proportional to 2,485.59, 3,728.77 and 841.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.59 : 3,728.77 = 841.69 : x
2. Step 2: Convert to fraction form
   2,485.59/3,728.77 = 841.69/x
3. Step 3: Cross multiply
   2,485.59x = 3,728.77 × 841.69
4. Step 4: Simplify right side
   2,485.59x = 3,138,470.98
5. Step 5: Solve for x
   x = 3,138,470.98/2,485.59
6. Step 6: Final answer
   x = 1,262.67