Finding the Fourth Proportional to 3,552.22, 5,322.27 and 1,991.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,552.22 : 5,322.27 = 1,991.25 : x
2. Step 2: Convert to fraction form
   3,552.22/5,322.27 = 1,991.25/x
3. Step 3: Cross multiply
   3,552.22x = 5,322.27 × 1,991.25
4. Step 4: Simplify right side
   3,552.22x = 10,597,980.43
5. Step 5: Solve for x
   x = 10,597,980.43/3,552.22
6. Step 6: Final answer
   x = 2,983.48