Finding the Fourth Proportional to 1,879.39, 2,591.98 and 1,408.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,879.39 : 2,591.98 = 1,408.39 : x
2. Step 2: Convert to fraction form
   1,879.39/2,591.98 = 1,408.39/x
3. Step 3: Cross multiply
   1,879.39x = 2,591.98 × 1,408.39
4. Step 4: Simplify right side
   1,879.39x = 3,650,498.71
5. Step 5: Solve for x
   x = 3,650,498.71/1,879.39
6. Step 6: Final answer
   x = 1,942.39