Finding the Fourth Proportional to 3,783.45, 5,672.17 and 1,443

Step by Step Solution

1. Step 1: Write the proportion equation
   3,783.45 : 5,672.17 = 1,443 : x
2. Step 2: Convert to fraction form
   3,783.45/5,672.17 = 1,443/x
3. Step 3: Cross multiply
   3,783.45x = 5,672.17 × 1,443
4. Step 4: Simplify right side
   3,783.45x = 8,184,941.31
5. Step 5: Solve for x
   x = 8,184,941.31/3,783.45
6. Step 6: Final answer
   x = 2,163.35