Finding the Fourth Proportional to 2,162.50, 2,984.25 and 1,231.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.50 : 2,984.25 = 1,231.18 : x
2. Step 2: Convert to fraction form
   2,162.50/2,984.25 = 1,231.18/x
3. Step 3: Cross multiply
   2,162.50x = 2,984.25 × 1,231.18
4. Step 4: Simplify right side
   2,162.50x = 3,674,148.92
5. Step 5: Solve for x
   x = 3,674,148.92/2,162.50
6. Step 6: Final answer
   x = 1,699.03