Finding the Fourth Proportional to 2,889.86, 4,335.37 and 942.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,889.86 : 4,335.37 = 942.21 : x
2. Step 2: Convert to fraction form
   2,889.86/4,335.37 = 942.21/x
3. Step 3: Cross multiply
   2,889.86x = 4,335.37 × 942.21
4. Step 4: Simplify right side
   2,889.86x = 4,084,826.61
5. Step 5: Solve for x
   x = 4,084,826.61/2,889.86
6. Step 6: Final answer
   x = 1,413.51