Finding the Fourth Proportional to 3,061.56, 4,221.81 and 2,620.92

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.56 : 4,221.81 = 2,620.92 : x
2. Step 2: Convert to fraction form
   3,061.56/4,221.81 = 2,620.92/x
3. Step 3: Cross multiply
   3,061.56x = 4,221.81 × 2,620.92
4. Step 4: Simplify right side
   3,061.56x = 11,065,026.27
5. Step 5: Solve for x
   x = 11,065,026.27/3,061.56
6. Step 6: Final answer
   x = 3,614.18