Finding the Fourth Proportional to 2,612.17, 3,604.79 and 1,433.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,612.17 : 3,604.79 = 1,433.21 : x
2. Step 2: Convert to fraction form
   2,612.17/3,604.79 = 1,433.21/x
3. Step 3: Cross multiply
   2,612.17x = 3,604.79 × 1,433.21
4. Step 4: Simplify right side
   2,612.17x = 5,166,413.91
5. Step 5: Solve for x
   x = 5,166,413.91/2,612.17
6. Step 6: Final answer
   x = 1,977.83