Finding the Fourth Proportional to 2,621.69, 3,618.03 and 1,442.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.69 : 3,618.03 = 1,442.85 : x
2. Step 2: Convert to fraction form
   2,621.69/3,618.03 = 1,442.85/x
3. Step 3: Cross multiply
   2,621.69x = 3,618.03 × 1,442.85
4. Step 4: Simplify right side
   2,621.69x = 5,220,274.59
5. Step 5: Solve for x
   x = 5,220,274.59/2,621.69
6. Step 6: Final answer
   x = 1,991.19