Finding the Fourth Proportional to 2,445.72, 3,670.02 and 885.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,445.72 : 3,670.02 = 885.56 : x
2. Step 2: Convert to fraction form
   2,445.72/3,670.02 = 885.56/x
3. Step 3: Cross multiply
   2,445.72x = 3,670.02 × 885.56
4. Step 4: Simplify right side
   2,445.72x = 3,250,022.91
5. Step 5: Solve for x
   x = 3,250,022.91/2,445.72
6. Step 6: Final answer
   x = 1,328.86