Finding the Fourth Proportional to 1,035.02, 1,427.94 and 685.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,035.02 : 1,427.94 = 685.50 : x
2. Step 2: Convert to fraction form
   1,035.02/1,427.94 = 685.50/x
3. Step 3: Cross multiply
   1,035.02x = 1,427.94 × 685.50
4. Step 4: Simplify right side
   1,035.02x = 978,852.87
5. Step 5: Solve for x
   x = 978,852.87/1,035.02
6. Step 6: Final answer
   x = 945.74