Finding the Fourth Proportional to 2,077.22, 2,866.48 and 1,145.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.22 : 2,866.48 = 1,145.72 : x
2. Step 2: Convert to fraction form
   2,077.22/2,866.48 = 1,145.72/x
3. Step 3: Cross multiply
   2,077.22x = 2,866.48 × 1,145.72
4. Step 4: Simplify right side
   2,077.22x = 3,284,166.27
5. Step 5: Solve for x
   x = 3,284,166.27/2,077.22
6. Step 6: Final answer
   x = 1,581.04