Finding the Fourth Proportional to 1,911.98, 2,851.55 and 1,879.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,911.98 : 2,851.55 = 1,879.18 : x
2. Step 2: Convert to fraction form
   1,911.98/2,851.55 = 1,879.18/x
3. Step 3: Cross multiply
   1,911.98x = 2,851.55 × 1,879.18
4. Step 4: Simplify right side
   1,911.98x = 5,358,575.73
5. Step 5: Solve for x
   x = 5,358,575.73/1,911.98
6. Step 6: Final answer
   x = 2,802.63