Finding the Fourth Proportional to 1,855.56, 2,559.86 and 1,109.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,855.56 : 2,559.86 = 1,109.15 : x
2. Step 2: Convert to fraction form
   1,855.56/2,559.86 = 1,109.15/x
3. Step 3: Cross multiply
   1,855.56x = 2,559.86 × 1,109.15
4. Step 4: Simplify right side
   1,855.56x = 2,839,250.37
5. Step 5: Solve for x
   x = 2,839,250.37/1,855.56
6. Step 6: Final answer
   x = 1,530.13