Finding the Fourth Proportional to 2,108.14, 3,161.67 and 1,012.30

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108.14 : 3,161.67 = 1,012.30 : x
2. Step 2: Convert to fraction form
   2,108.14/3,161.67 = 1,012.30/x
3. Step 3: Cross multiply
   2,108.14x = 3,161.67 × 1,012.30
4. Step 4: Simplify right side
   2,108.14x = 3,200,558.54
5. Step 5: Solve for x
   x = 3,200,558.54/2,108.14
6. Step 6: Final answer
   x = 1,518.19