Finding the Fourth Proportional to 1,809.56, 2,496.48 and 1,109.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,809.56 : 2,496.48 = 1,109.72 : x
2. Step 2: Convert to fraction form
   1,809.56/2,496.48 = 1,109.72/x
3. Step 3: Cross multiply
   1,809.56x = 2,496.48 × 1,109.72
4. Step 4: Simplify right side
   1,809.56x = 2,770,393.79
5. Step 5: Solve for x
   x = 2,770,393.79/1,809.56
6. Step 6: Final answer
   x = 1,530.98