Finding the Fourth Proportional to 1,032.72, 1,546.48 and 685.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,032.72 : 1,546.48 = 685.01 : x
2. Step 2: Convert to fraction form
   1,032.72/1,546.48 = 685.01/x
3. Step 3: Cross multiply
   1,032.72x = 1,546.48 × 685.01
4. Step 4: Simplify right side
   1,032.72x = 1,059,352.21
5. Step 5: Solve for x
   x = 1,059,352.21/1,032.72
6. Step 6: Final answer
   x = 1,025.78