Finding the Fourth Proportional to 2,013, 3,018.69 and 972.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,013 : 3,018.69 = 972.15 : x
2. Step 2: Convert to fraction form
   2,013/3,018.69 = 972.15/x
3. Step 3: Cross multiply
   2,013x = 3,018.69 × 972.15
4. Step 4: Simplify right side
   2,013x = 2,934,619.48
5. Step 5: Solve for x
   x = 2,934,619.48/2,013
6. Step 6: Final answer
   x = 1,457.83