Finding the Fourth Proportional to 2,800.66, 3,863.55 and 2,175.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,800.66 : 3,863.55 = 2,175.34 : x
2. Step 2: Convert to fraction form
   2,800.66/3,863.55 = 2,175.34/x
3. Step 3: Cross multiply
   2,800.66x = 3,863.55 × 2,175.34
4. Step 4: Simplify right side
   2,800.66x = 8,404,534.86
5. Step 5: Solve for x
   x = 8,404,534.86/2,800.66
6. Step 6: Final answer
   x = 3,000.91