Finding the Fourth Proportional to 2,782.34, 4,173.55 and 908.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,782.34 : 4,173.55 = 908.22 : x
2. Step 2: Convert to fraction form
   2,782.34/4,173.55 = 908.22/x
3. Step 3: Cross multiply
   2,782.34x = 4,173.55 × 908.22
4. Step 4: Simplify right side
   2,782.34x = 3,790,502.72
5. Step 5: Solve for x
   x = 3,790,502.72/2,782.34
6. Step 6: Final answer
   x = 1,362.34