Finding the Fourth Proportional to 1,453.87, 2,005.98 and 864.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,453.87 : 2,005.98 = 864.31 : x
2. Step 2: Convert to fraction form
   1,453.87/2,005.98 = 864.31/x
3. Step 3: Cross multiply
   1,453.87x = 2,005.98 × 864.31
4. Step 4: Simplify right side
   1,453.87x = 1,733,788.57
5. Step 5: Solve for x
   x = 1,733,788.57/1,453.87
6. Step 6: Final answer
   x = 1,192.53