Finding the Fourth Proportional to 1,485.34, 2,229.37 and 755.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485.34 : 2,229.37 = 755.42 : x
2. Step 2: Convert to fraction form
   1,485.34/2,229.37 = 755.42/x
3. Step 3: Cross multiply
   1,485.34x = 2,229.37 × 755.42
4. Step 4: Simplify right side
   1,485.34x = 1,684,110.69
5. Step 5: Solve for x
   x = 1,684,110.69/1,485.34
6. Step 6: Final answer
   x = 1,133.82