Finding the Fourth Proportional to 1,290.33, 1,936.71 and 1,003.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,290.33 : 1,936.71 = 1,003.59 : x
2. Step 2: Convert to fraction form
   1,290.33/1,936.71 = 1,003.59/x
3. Step 3: Cross multiply
   1,290.33x = 1,936.71 × 1,003.59
4. Step 4: Simplify right side
   1,290.33x = 1,943,662.79
5. Step 5: Solve for x
   x = 1,943,662.79/1,290.33
6. Step 6: Final answer
   x = 1,506.33