Finding the Fourth Proportional to 1,451.39, 2,003.50 and 1,009.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.39 : 2,003.50 = 1,009.55 : x
2. Step 2: Convert to fraction form
   1,451.39/2,003.50 = 1,009.55/x
3. Step 3: Cross multiply
   1,451.39x = 2,003.50 × 1,009.55
4. Step 4: Simplify right side
   1,451.39x = 2,022,632.62
5. Step 5: Solve for x
   x = 2,022,632.62/1,451.39
6. Step 6: Final answer
   x = 1,393.58