Finding the Fourth Proportional to 3,657.57, 5,047.38 and 2,085.54

Step by Step Solution

1. Step 1: Write the proportion equation
   3,657.57 : 5,047.38 = 2,085.54 : x
2. Step 2: Convert to fraction form
   3,657.57/5,047.38 = 2,085.54/x
3. Step 3: Cross multiply
   3,657.57x = 5,047.38 × 2,085.54
4. Step 4: Simplify right side
   3,657.57x = 10,526,512.89
5. Step 5: Solve for x
   x = 10,526,512.89/3,657.57
6. Step 6: Final answer
   x = 2,878.01