Finding the Fourth Proportional to 3,669.32, 5,063.62 and 1,990.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,669.32 : 5,063.62 = 1,990.72 : x
2. Step 2: Convert to fraction form
   3,669.32/5,063.62 = 1,990.72/x
3. Step 3: Cross multiply
   3,669.32x = 5,063.62 × 1,990.72
4. Step 4: Simplify right side
   3,669.32x = 10,080,249.61
5. Step 5: Solve for x
   x = 10,080,249.61/3,669.32
6. Step 6: Final answer
   x = 2,747.17