Finding the Fourth Proportional to 2,009.18, 2,772.79 and 1,310.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,009.18 : 2,772.79 = 1,310.54 : x
2. Step 2: Convert to fraction form
   2,009.18/2,772.79 = 1,310.54/x
3. Step 3: Cross multiply
   2,009.18x = 2,772.79 × 1,310.54
4. Step 4: Simplify right side
   2,009.18x = 3,633,852.21
5. Step 5: Solve for x
   x = 3,633,852.21/2,009.18
6. Step 6: Final answer
   x = 1,808.62