Finding the Fourth Proportional to 1,039.42, 1,441.23 and 1,004.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039.42 : 1,441.23 = 1,004.73 : x
2. Step 2: Convert to fraction form
   1,039.42/1,441.23 = 1,004.73/x
3. Step 3: Cross multiply
   1,039.42x = 1,441.23 × 1,004.73
4. Step 4: Simplify right side
   1,039.42x = 1,448,047.02
5. Step 5: Solve for x
   x = 1,448,047.02/1,039.42
6. Step 6: Final answer
   x = 1,393.13