Finding the Fourth Proportional to 3,449.45, 5,172.59 and 1,109.03

Step by Step Solution

1. Step 1: Write the proportion equation
   3,449.45 : 5,172.59 = 1,109.03 : x
2. Step 2: Convert to fraction form
   3,449.45/5,172.59 = 1,109.03/x
3. Step 3: Cross multiply
   3,449.45x = 5,172.59 × 1,109.03
4. Step 4: Simplify right side
   3,449.45x = 5,736,534.40
5. Step 5: Solve for x
   x = 5,736,534.40/3,449.45
6. Step 6: Final answer
   x = 1,663.03