Finding the Fourth Proportional to 1,478.72, 2,040.56 and 849.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,478.72 : 2,040.56 = 849.12 : x
2. Step 2: Convert to fraction form
   1,478.72/2,040.56 = 849.12/x
3. Step 3: Cross multiply
   1,478.72x = 2,040.56 × 849.12
4. Step 4: Simplify right side
   1,478.72x = 1,732,676.06
5. Step 5: Solve for x
   x = 1,732,676.06/1,478.72
6. Step 6: Final answer
   x = 1,171.74