Finding the Fourth Proportional to 2,169.69, 2,994.20 and 1,318.69

Step by Step Solution

1. Step 1: Write the proportion equation
   2,169.69 : 2,994.20 = 1,318.69 : x
2. Step 2: Convert to fraction form
   2,169.69/2,994.20 = 1,318.69/x
3. Step 3: Cross multiply
   2,169.69x = 2,994.20 × 1,318.69
4. Step 4: Simplify right side
   2,169.69x = 3,948,421.60
5. Step 5: Solve for x
   x = 3,948,421.60/2,169.69
6. Step 6: Final answer
   x = 1,819.81