Finding the Fourth Proportional to 2,095.12, 2,890.56 and 1,308.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,095.12 : 2,890.56 = 1,308.88 : x
2. Step 2: Convert to fraction form
   2,095.12/2,890.56 = 1,308.88/x
3. Step 3: Cross multiply
   2,095.12x = 2,890.56 × 1,308.88
4. Step 4: Simplify right side
   2,095.12x = 3,783,396.17
5. Step 5: Solve for x
   x = 3,783,396.17/2,095.12
6. Step 6: Final answer
   x = 1,805.81