Finding the Fourth Proportional to 2,162.30, 3,243.90 and 930.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,162.30 : 3,243.90 = 930.02 : x
2. Step 2: Convert to fraction form
   2,162.30/3,243.90 = 930.02/x
3. Step 3: Cross multiply
   2,162.30x = 3,243.90 × 930.02
4. Step 4: Simplify right side
   2,162.30x = 3,016,891.88
5. Step 5: Solve for x
   x = 3,016,891.88/2,162.30
6. Step 6: Final answer
   x = 1,395.22