Finding the Fourth Proportional to 1,061.02, 1,591.62 and 281.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.02 : 1,591.62 = 281.02 : x
2. Step 2: Convert to fraction form
   1,061.02/1,591.62 = 281.02/x
3. Step 3: Cross multiply
   1,061.02x = 1,591.62 × 281.02
4. Step 4: Simplify right side
   1,061.02x = 447,277.05
5. Step 5: Solve for x
   x = 447,277.05/1,061.02
6. Step 6: Final answer
   x = 421.55