Finding the Fourth Proportional to 1,073.72, 1,481.40 and 852

Step by Step Solution

1. Step 1: Write the proportion equation
   1,073.72 : 1,481.40 = 852 : x
2. Step 2: Convert to fraction form
   1,073.72/1,481.40 = 852/x
3. Step 3: Cross multiply
   1,073.72x = 1,481.40 × 852
4. Step 4: Simplify right side
   1,073.72x = 1,262,152.80
5. Step 5: Solve for x
   x = 1,262,152.80/1,073.72
6. Step 6: Final answer
   x = 1,175.50