Finding the Fourth Proportional to 3,061.09, 4,224.57 and 1,865.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,061.09 : 4,224.57 = 1,865.78 : x
2. Step 2: Convert to fraction form
   3,061.09/4,224.57 = 1,865.78/x
3. Step 3: Cross multiply
   3,061.09x = 4,224.57 × 1,865.78
4. Step 4: Simplify right side
   3,061.09x = 7,882,118.21
5. Step 5: Solve for x
   x = 7,882,118.21/3,061.09
6. Step 6: Final answer
   x = 2,574.94