Finding the Fourth Proportional to 3,345.12, 5,018.49 and 1,005.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,345.12 : 5,018.49 = 1,005.12 : x
2. Step 2: Convert to fraction form
   3,345.12/5,018.49 = 1,005.12/x
3. Step 3: Cross multiply
   3,345.12x = 5,018.49 × 1,005.12
4. Step 4: Simplify right side
   3,345.12x = 5,044,184.67
5. Step 5: Solve for x
   x = 5,044,184.67/3,345.12
6. Step 6: Final answer
   x = 1,507.92