Finding the Fourth Proportional to 2,307.56, 3,458.78 and 1,089

Step by Step Solution

1. Step 1: Write the proportion equation
   2,307.56 : 3,458.78 = 1,089 : x
2. Step 2: Convert to fraction form
   2,307.56/3,458.78 = 1,089/x
3. Step 3: Cross multiply
   2,307.56x = 3,458.78 × 1,089
4. Step 4: Simplify right side
   2,307.56x = 3,766,611.42
5. Step 5: Solve for x
   x = 3,766,611.42/2,307.56
6. Step 6: Final answer
   x = 1,632.29