Finding the Fourth Proportional to 2,162.83, 2,984.49 and 1,218.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.83 : 2,984.49 = 1,218.60 : x
2. Step 2: Convert to fraction form
   2,162.83/2,984.49 = 1,218.60/x
3. Step 3: Cross multiply
   2,162.83x = 2,984.49 × 1,218.60
4. Step 4: Simplify right side
   2,162.83x = 3,636,899.51
5. Step 5: Solve for x
   x = 3,636,899.51/2,162.83
6. Step 6: Final answer
   x = 1,681.55