Finding the Fourth Proportional to 2,630.72, 3,946.26 and 900.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.72 : 3,946.26 = 900.56 : x
2. Step 2: Convert to fraction form
   2,630.72/3,946.26 = 900.56/x
3. Step 3: Cross multiply
   2,630.72x = 3,946.26 × 900.56
4. Step 4: Simplify right side
   2,630.72x = 3,553,843.91
5. Step 5: Solve for x
   x = 3,553,843.91/2,630.72
6. Step 6: Final answer
   x = 1,350.90