Finding the Fourth Proportional to 2,008.56, 2,770.56 and 1,310.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,008.56 : 2,770.56 = 1,310.88 : x
2. Step 2: Convert to fraction form
   2,008.56/2,770.56 = 1,310.88/x
3. Step 3: Cross multiply
   2,008.56x = 2,770.56 × 1,310.88
4. Step 4: Simplify right side
   2,008.56x = 3,631,871.69
5. Step 5: Solve for x
   x = 3,631,871.69/2,008.56
6. Step 6: Final answer
   x = 1,808.20