Finding the Fourth Proportional to 2,876.83, 3,968.86 and 1,664.71

Step by Step Solution

1. Step 1: Write the proportion equation
   2,876.83 : 3,968.86 = 1,664.71 : x
2. Step 2: Convert to fraction form
   2,876.83/3,968.86 = 1,664.71/x
3. Step 3: Cross multiply
   2,876.83x = 3,968.86 × 1,664.71
4. Step 4: Simplify right side
   2,876.83x = 6,606,986.85
5. Step 5: Solve for x
   x = 6,606,986.85/2,876.83
6. Step 6: Final answer
   x = 2,296.62