Finding the Fourth Proportional to 2,052.72, 3,078.48 and 803.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,052.72 : 3,078.48 = 803.10 : x
2. Step 2: Convert to fraction form
   2,052.72/3,078.48 = 803.10/x
3. Step 3: Cross multiply
   2,052.72x = 3,078.48 × 803.10
4. Step 4: Simplify right side
   2,052.72x = 2,472,327.29
5. Step 5: Solve for x
   x = 2,472,327.29/2,052.72
6. Step 6: Final answer
   x = 1,204.42