Finding the Fourth Proportional to 3,630.83, 5,447.03 and 1,290.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,630.83 : 5,447.03 = 1,290.96 : x
2. Step 2: Convert to fraction form
   3,630.83/5,447.03 = 1,290.96/x
3. Step 3: Cross multiply
   3,630.83x = 5,447.03 × 1,290.96
4. Step 4: Simplify right side
   3,630.83x = 7,031,891.39
5. Step 5: Solve for x
   x = 7,031,891.39/3,630.83
6. Step 6: Final answer
   x = 1,936.72