Finding the Fourth Proportional to 2,223.78, 3,333.08 and 1,674.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,223.78 : 3,333.08 = 1,674.20 : x
2. Step 2: Convert to fraction form
   2,223.78/3,333.08 = 1,674.20/x
3. Step 3: Cross multiply
   2,223.78x = 3,333.08 × 1,674.20
4. Step 4: Simplify right side
   2,223.78x = 5,580,242.54
5. Step 5: Solve for x
   x = 5,580,242.54/2,223.78
6. Step 6: Final answer
   x = 2,509.35