Finding the Fourth Proportional to 2,162.77, 3,245.46 and 864.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.77 : 3,245.46 = 864.13 : x
2. Step 2: Convert to fraction form
   2,162.77/3,245.46 = 864.13/x
3. Step 3: Cross multiply
   2,162.77x = 3,245.46 × 864.13
4. Step 4: Simplify right side
   2,162.77x = 2,804,499.35
5. Step 5: Solve for x
   x = 2,804,499.35/2,162.77
6. Step 6: Final answer
   x = 1,296.72