Finding the Fourth Proportional to 1,083.58, 1,622.17 and 671.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.58 : 1,622.17 = 671.39 : x
2. Step 2: Convert to fraction form
   1,083.58/1,622.17 = 671.39/x
3. Step 3: Cross multiply
   1,083.58x = 1,622.17 × 671.39
4. Step 4: Simplify right side
   1,083.58x = 1,089,102.28
5. Step 5: Solve for x
   x = 1,089,102.28/1,083.58
6. Step 6: Final answer
   x = 1,005.10