Finding the Fourth Proportional to 2,621.73, 3,618.06 and 1,442.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.73 : 3,618.06 = 1,442.79 : x
2. Step 2: Convert to fraction form
   2,621.73/3,618.06 = 1,442.79/x
3. Step 3: Cross multiply
   2,621.73x = 3,618.06 × 1,442.79
4. Step 4: Simplify right side
   2,621.73x = 5,220,100.79
5. Step 5: Solve for x
   x = 5,220,100.79/2,621.73
6. Step 6: Final answer
   x = 1,991.09