Finding the Fourth Proportional to 3,085.15, 4,259.57 and 1,826.61

Step by Step Solution

1. Step 1: Write the proportion equation
   3,085.15 : 4,259.57 = 1,826.61 : x
2. Step 2: Convert to fraction form
   3,085.15/4,259.57 = 1,826.61/x
3. Step 3: Cross multiply
   3,085.15x = 4,259.57 × 1,826.61
4. Step 4: Simplify right side
   3,085.15x = 7,780,573.16
5. Step 5: Solve for x
   x = 7,780,573.16/3,085.15
6. Step 6: Final answer
   x = 2,521.94