Finding the Fourth Proportional to 2,162.69, 2,984.51 and 1,231.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.69 : 2,984.51 = 1,231.19 : x
2. Step 2: Convert to fraction form
   2,162.69/2,984.51 = 1,231.19/x
3. Step 3: Cross multiply
   2,162.69x = 2,984.51 × 1,231.19
4. Step 4: Simplify right side
   2,162.69x = 3,674,498.87
5. Step 5: Solve for x
   x = 3,674,498.87/2,162.69
6. Step 6: Final answer
   x = 1,699.04