Finding the Fourth Proportional to 2,193.40, 3,027.72 and 1,308.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,193.40 : 3,027.72 = 1,308.88 : x
2. Step 2: Convert to fraction form
   2,193.40/3,027.72 = 1,308.88/x
3. Step 3: Cross multiply
   2,193.40x = 3,027.72 × 1,308.88
4. Step 4: Simplify right side
   2,193.40x = 3,962,922.15
5. Step 5: Solve for x
   x = 3,962,922.15/2,193.40
6. Step 6: Final answer
   x = 1,806.75