Finding the Fourth Proportional to 1,004.09, 1,385.55 and 605.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,004.09 : 1,385.55 = 605.69 : x
2. Step 2: Convert to fraction form
   1,004.09/1,385.55 = 605.69/x
3. Step 3: Cross multiply
   1,004.09x = 1,385.55 × 605.69
4. Step 4: Simplify right side
   1,004.09x = 839,213.78
5. Step 5: Solve for x
   x = 839,213.78/1,004.09
6. Step 6: Final answer
   x = 835.80