Finding the Fourth Proportional to 2,588.42, 3,879.16 and 943.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,588.42 : 3,879.16 = 943.40 : x
2. Step 2: Convert to fraction form
   2,588.42/3,879.16 = 943.40/x
3. Step 3: Cross multiply
   2,588.42x = 3,879.16 × 943.40
4. Step 4: Simplify right side
   2,588.42x = 3,659,599.54
5. Step 5: Solve for x
   x = 3,659,599.54/2,588.42
6. Step 6: Final answer
   x = 1,413.84