Finding the Fourth Proportional to 2,530.21, 3,795.83 and 864.19

Step by Step Solution

1. Step 1: Write the proportion equation
   2,530.21 : 3,795.83 = 864.19 : x
2. Step 2: Convert to fraction form
   2,530.21/3,795.83 = 864.19/x
3. Step 3: Cross multiply
   2,530.21x = 3,795.83 × 864.19
4. Step 4: Simplify right side
   2,530.21x = 3,280,304.52
5. Step 5: Solve for x
   x = 3,280,304.52/2,530.21
6. Step 6: Final answer
   x = 1,296.46