Finding the Fourth Proportional to 1,109.56, 1,531.34 and 1,075.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,109.56 : 1,531.34 = 1,075.56 : x
2. Step 2: Convert to fraction form
   1,109.56/1,531.34 = 1,075.56/x
3. Step 3: Cross multiply
   1,109.56x = 1,531.34 × 1,075.56
4. Step 4: Simplify right side
   1,109.56x = 1,647,048.05
5. Step 5: Solve for x
   x = 1,647,048.05/1,109.56
6. Step 6: Final answer
   x = 1,484.42