Finding the Fourth Proportional to 1,021.89, 1,410.19 and 602.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,021.89 : 1,410.19 = 602.27 : x
2. Step 2: Convert to fraction form
   1,021.89/1,410.19 = 602.27/x
3. Step 3: Cross multiply
   1,021.89x = 1,410.19 × 602.27
4. Step 4: Simplify right side
   1,021.89x = 849,311.86
5. Step 5: Solve for x
   x = 849,311.86/1,021.89
6. Step 6: Final answer
   x = 831.12