Finding the Fourth Proportional to 1,980.82, 2,984.85 and 1,641.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,980.82 : 2,984.85 = 1,641.77 : x
2. Step 2: Convert to fraction form
   1,980.82/2,984.85 = 1,641.77/x
3. Step 3: Cross multiply
   1,980.82x = 2,984.85 × 1,641.77
4. Step 4: Simplify right side
   1,980.82x = 4,900,433.45
5. Step 5: Solve for x
   x = 4,900,433.45/1,980.82
6. Step 6: Final answer
   x = 2,473.94