Finding the Fourth Proportional to 2,308.03, 3,459.31 and 1,211.83

Step by Step Solution

1. Step 1: Write the proportion equation
   2,308.03 : 3,459.31 = 1,211.83 : x
2. Step 2: Convert to fraction form
   2,308.03/3,459.31 = 1,211.83/x
3. Step 3: Cross multiply
   2,308.03x = 3,459.31 × 1,211.83
4. Step 4: Simplify right side
   2,308.03x = 4,192,083.96
5. Step 5: Solve for x
   x = 4,192,083.96/2,308.03
6. Step 6: Final answer
   x = 1,816.31