Finding the Fourth Proportional to 3,561.67, 4,915.18 and 2,069.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,561.67 : 4,915.18 = 2,069.72 : x
2. Step 2: Convert to fraction form
   3,561.67/4,915.18 = 2,069.72/x
3. Step 3: Cross multiply
   3,561.67x = 4,915.18 × 2,069.72
4. Step 4: Simplify right side
   3,561.67x = 10,173,042.79
5. Step 5: Solve for x
   x = 10,173,042.79/3,561.67
6. Step 6: Final answer
   x = 2,856.26