Finding the Fourth Proportional to 2,148.81, 2,980.41 and 2,061.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.81 : 2,980.41 = 2,061.33 : x
2. Step 2: Convert to fraction form
   2,148.81/2,980.41 = 2,061.33/x
3. Step 3: Cross multiply
   2,148.81x = 2,980.41 × 2,061.33
4. Step 4: Simplify right side
   2,148.81x = 6,143,608.55
5. Step 5: Solve for x
   x = 6,143,608.55/2,148.81
6. Step 6: Final answer
   x = 2,859.07