Finding the Fourth Proportional to 1,022.42, 1,410.55 and 602.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,022.42 : 1,410.55 = 602.47 : x
2. Step 2: Convert to fraction form
   1,022.42/1,410.55 = 602.47/x
3. Step 3: Cross multiply
   1,022.42x = 1,410.55 × 602.47
4. Step 4: Simplify right side
   1,022.42x = 849,814.32
5. Step 5: Solve for x
   x = 849,814.32/1,022.42
6. Step 6: Final answer
   x = 831.18