Finding the Fourth Proportional to 3,576.65, 4,935.76 and 2,085.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,576.65 : 4,935.76 = 2,085.57 : x
2. Step 2: Convert to fraction form
   3,576.65/4,935.76 = 2,085.57/x
3. Step 3: Cross multiply
   3,576.65x = 4,935.76 × 2,085.57
4. Step 4: Simplify right side
   3,576.65x = 10,293,867.77
5. Step 5: Solve for x
   x = 10,293,867.77/3,576.65
6. Step 6: Final answer
   x = 2,878.08