Finding the Fourth Proportional to 2,301.47, 3,451.52 and 820.43

Step by Step Solution

1. Step 1: Write the proportion equation
   2,301.47 : 3,451.52 = 820.43 : x
2. Step 2: Convert to fraction form
   2,301.47/3,451.52 = 820.43/x
3. Step 3: Cross multiply
   2,301.47x = 3,451.52 × 820.43
4. Step 4: Simplify right side
   2,301.47x = 2,831,735.08
5. Step 5: Solve for x
   x = 2,831,735.08/2,301.47
6. Step 6: Final answer
   x = 1,230.40