Finding the Fourth Proportional to 3,180.78, 4,388.82 and 2,061.57

Step by Step Solution

1. Step 1: Write the proportion equation
   3,180.78 : 4,388.82 = 2,061.57 : x
2. Step 2: Convert to fraction form
   3,180.78/4,388.82 = 2,061.57/x
3. Step 3: Cross multiply
   3,180.78x = 4,388.82 × 2,061.57
4. Step 4: Simplify right side
   3,180.78x = 9,047,859.65
5. Step 5: Solve for x
   x = 9,047,859.65/3,180.78
6. Step 6: Final answer
   x = 2,844.54