Finding the Fourth Proportional to 2,012.13, 3,018.82 and 902.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.13 : 3,018.82 = 902.47 : x
2. Step 2: Convert to fraction form
   2,012.13/3,018.82 = 902.47/x
3. Step 3: Cross multiply
   2,012.13x = 3,018.82 × 902.47
4. Step 4: Simplify right side
   2,012.13x = 2,724,389.97
5. Step 5: Solve for x
   x = 2,724,389.97/2,012.13
6. Step 6: Final answer
   x = 1,353.99