Finding the Fourth Proportional to 1,161.37, 1,597.94 and 1,003.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,161.37 : 1,597.94 = 1,003.50 : x
2. Step 2: Convert to fraction form
   1,161.37/1,597.94 = 1,003.50/x
3. Step 3: Cross multiply
   1,161.37x = 1,597.94 × 1,003.50
4. Step 4: Simplify right side
   1,161.37x = 1,603,531.54
5. Step 5: Solve for x
   x = 1,603,531.54/1,161.37
6. Step 6: Final answer
   x = 1,380.72