Finding the Fourth Proportional to 1,077.02, 1,485.75 and 683.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077.02 : 1,485.75 = 683.42 : x
2. Step 2: Convert to fraction form
   1,077.02/1,485.75 = 683.42/x
3. Step 3: Cross multiply
   1,077.02x = 1,485.75 × 683.42
4. Step 4: Simplify right side
   1,077.02x = 1,015,391.27
5. Step 5: Solve for x
   x = 1,015,391.27/1,077.02
6. Step 6: Final answer
   x = 942.78