Finding the Fourth Proportional to 1,484.56, 2,048.78 and 855.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,484.56 : 2,048.78 = 855.10 : x
2. Step 2: Convert to fraction form
   1,484.56/2,048.78 = 855.10/x
3. Step 3: Cross multiply
   1,484.56x = 2,048.78 × 855.10
4. Step 4: Simplify right side
   1,484.56x = 1,751,911.78
5. Step 5: Solve for x
   x = 1,751,911.78/1,484.56
6. Step 6: Final answer
   x = 1,180.09