Finding the Fourth Proportional to 2,012.40, 2,780.18 and 1,609.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,012.40 : 2,780.18 = 1,609.49 : x
2. Step 2: Convert to fraction form
   2,012.40/2,780.18 = 1,609.49/x
3. Step 3: Cross multiply
   2,012.40x = 2,780.18 × 1,609.49
4. Step 4: Simplify right side
   2,012.40x = 4,474,649.96
5. Step 5: Solve for x
   x = 4,474,649.96/2,012.40
6. Step 6: Final answer
   x = 2,223.54