Finding the Fourth Proportional to 2,015.12, 3,018.09 and 1,461.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,015.12 : 3,018.09 = 1,461.62 : x
2. Step 2: Convert to fraction form
   2,015.12/3,018.09 = 1,461.62/x
3. Step 3: Cross multiply
   2,015.12x = 3,018.09 × 1,461.62
4. Step 4: Simplify right side
   2,015.12x = 4,411,300.71
5. Step 5: Solve for x
   x = 4,411,300.71/2,015.12
6. Step 6: Final answer
   x = 2,189.10