Finding the Fourth Proportional to 2,545.76, 3,820.47 and 1,085.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,545.76 : 3,820.47 = 1,085.94 : x
2. Step 2: Convert to fraction form
   2,545.76/3,820.47 = 1,085.94/x
3. Step 3: Cross multiply
   2,545.76x = 3,820.47 × 1,085.94
4. Step 4: Simplify right side
   2,545.76x = 4,148,797.12
5. Step 5: Solve for x
   x = 4,148,797.12/2,545.76
6. Step 6: Final answer
   x = 1,629.69