Finding the Fourth Proportional to 2,346.86, 3,238.67 and 1,284.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,346.86 : 3,238.67 = 1,284.61 : x
2. Step 2: Convert to fraction form
   2,346.86/3,238.67 = 1,284.61/x
3. Step 3: Cross multiply
   2,346.86x = 3,238.67 × 1,284.61
4. Step 4: Simplify right side
   2,346.86x = 4,160,413.35
5. Step 5: Solve for x
   x = 4,160,413.35/2,346.86
6. Step 6: Final answer
   x = 1,772.76