Finding the Fourth Proportional to 1,054.38, 1,453.69 and 864.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,054.38 : 1,453.69 = 864.62 : x
2. Step 2: Convert to fraction form
   1,054.38/1,453.69 = 864.62/x
3. Step 3: Cross multiply
   1,054.38x = 1,453.69 × 864.62
4. Step 4: Simplify right side
   1,054.38x = 1,256,888.76
5. Step 5: Solve for x
   x = 1,256,888.76/1,054.38
6. Step 6: Final answer
   x = 1,192.07