Finding the Fourth Proportional to 1,518.69, 2,095.80 and 855.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,518.69 : 2,095.80 = 855.56 : x
2. Step 2: Convert to fraction form
   1,518.69/2,095.80 = 855.56/x
3. Step 3: Cross multiply
   1,518.69x = 2,095.80 × 855.56
4. Step 4: Simplify right side
   1,518.69x = 1,793,072.17
5. Step 5: Solve for x
   x = 1,793,072.17/1,518.69
6. Step 6: Final answer
   x = 1,180.67