Finding the Fourth Proportional to 2,940.78, 4,412.25 and 1,209.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,940.78 : 4,412.25 = 1,209.54 : x
2. Step 2: Convert to fraction form
   2,940.78/4,412.25 = 1,209.54/x
3. Step 3: Cross multiply
   2,940.78x = 4,412.25 × 1,209.54
4. Step 4: Simplify right side
   2,940.78x = 5,336,792.87
5. Step 5: Solve for x
   x = 5,336,792.87/2,940.78
6. Step 6: Final answer
   x = 1,814.75