Finding the Fourth Proportional to 2,077.66, 3,111.63 and 1,641.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.66 : 3,111.63 = 1,641.88 : x
2. Step 2: Convert to fraction form
   2,077.66/3,111.63 = 1,641.88/x
3. Step 3: Cross multiply
   2,077.66x = 3,111.63 × 1,641.88
4. Step 4: Simplify right side
   2,077.66x = 5,108,923.06
5. Step 5: Solve for x
   x = 5,108,923.06/2,077.66
6. Step 6: Final answer
   x = 2,458.98