Finding the Fourth Proportional to 2,621.32, 3,617.43 and 1,442.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,621.32 : 3,617.43 = 1,442.47 : x
2. Step 2: Convert to fraction form
   2,621.32/3,617.43 = 1,442.47/x
3. Step 3: Cross multiply
   2,621.32x = 3,617.43 × 1,442.47
4. Step 4: Simplify right side
   2,621.32x = 5,218,034.25
5. Step 5: Solve for x
   x = 5,218,034.25/2,621.32
6. Step 6: Final answer
   x = 1,990.61