Finding the Fourth Proportional to 1,612.31, 2,413.61 and 1,179.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.31 : 2,413.61 = 1,179.77 : x
2. Step 2: Convert to fraction form
   1,612.31/2,413.61 = 1,179.77/x
3. Step 3: Cross multiply
   1,612.31x = 2,413.61 × 1,179.77
4. Step 4: Simplify right side
   1,612.31x = 2,847,498.77
5. Step 5: Solve for x
   x = 2,847,498.77/1,612.31
6. Step 6: Final answer
   x = 1,766.10