Finding the Fourth Proportional to 2,680.29, 3,699.27 and 1,561.41

Step by Step Solution

1. Step 1: Write the proportion equation
   2,680.29 : 3,699.27 = 1,561.41 : x
2. Step 2: Convert to fraction form
   2,680.29/3,699.27 = 1,561.41/x
3. Step 3: Cross multiply
   2,680.29x = 3,699.27 × 1,561.41
4. Step 4: Simplify right side
   2,680.29x = 5,776,077.17
5. Step 5: Solve for x
   x = 5,776,077.17/2,680.29
6. Step 6: Final answer
   x = 2,155.02