Finding the Fourth Proportional to 2,238.16, 3,089.32 and 1,306.88

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.16 : 3,089.32 = 1,306.88 : x
2. Step 2: Convert to fraction form
   2,238.16/3,089.32 = 1,306.88/x
3. Step 3: Cross multiply
   2,238.16x = 3,089.32 × 1,306.88
4. Step 4: Simplify right side
   2,238.16x = 4,037,370.52
5. Step 5: Solve for x
   x = 4,037,370.52/2,238.16
6. Step 6: Final answer
   x = 1,803.88