Finding the Fourth Proportional to 3,469.98, 5,205.12 and 1,005.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,469.98 : 5,205.12 = 1,005.12 : x
2. Step 2: Convert to fraction form
   3,469.98/5,205.12 = 1,005.12/x
3. Step 3: Cross multiply
   3,469.98x = 5,205.12 × 1,005.12
4. Step 4: Simplify right side
   3,469.98x = 5,231,770.21
5. Step 5: Solve for x
   x = 5,231,770.21/3,469.98
6. Step 6: Final answer
   x = 1,507.72