Finding the Fourth Proportional to 2,613.21, 3,917.31 and 969.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,613.21 : 3,917.31 = 969.32 : x
2. Step 2: Convert to fraction form
   2,613.21/3,917.31 = 969.32/x
3. Step 3: Cross multiply
   2,613.21x = 3,917.31 × 969.32
4. Step 4: Simplify right side
   2,613.21x = 3,797,107.34
5. Step 5: Solve for x
   x = 3,797,107.34/2,613.21
6. Step 6: Final answer
   x = 1,453.04