Finding the Fourth Proportional to 3,679.16, 5,076.60 and 2,085.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,679.16 : 5,076.60 = 2,085.72 : x
2. Step 2: Convert to fraction form
   3,679.16/5,076.60 = 2,085.72/x
3. Step 3: Cross multiply
   3,679.16x = 5,076.60 × 2,085.72
4. Step 4: Simplify right side
   3,679.16x = 10,588,366.15
5. Step 5: Solve for x
   x = 10,588,366.15/3,679.16
6. Step 6: Final answer
   x = 2,877.93