Finding the Fourth Proportional to 3,574.30, 5,361.72 and 1,109.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,574.30 : 5,361.72 = 1,109.30 : x
2. Step 2: Convert to fraction form
   3,574.30/5,361.72 = 1,109.30/x
3. Step 3: Cross multiply
   3,574.30x = 5,361.72 × 1,109.30
4. Step 4: Simplify right side
   3,574.30x = 5,947,728.15
5. Step 5: Solve for x
   x = 5,947,728.15/3,574.30
6. Step 6: Final answer
   x = 1,664.02