Finding the Fourth Proportional to 1,629.32, 2,443.37 and 1,081.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,629.32 : 2,443.37 = 1,081.35 : x
2. Step 2: Convert to fraction form
   1,629.32/2,443.37 = 1,081.35/x
3. Step 3: Cross multiply
   1,629.32x = 2,443.37 × 1,081.35
4. Step 4: Simplify right side
   1,629.32x = 2,642,132.74
5. Step 5: Solve for x
   x = 2,642,132.74/1,629.32
6. Step 6: Final answer
   x = 1,621.62