Finding the Fourth Proportional to 3,793.76, 5,688.78 and 1,328.22

Step by Step Solution

1. Step 1: Write the proportion equation
   3,793.76 : 5,688.78 = 1,328.22 : x
2. Step 2: Convert to fraction form
   3,793.76/5,688.78 = 1,328.22/x
3. Step 3: Cross multiply
   3,793.76x = 5,688.78 × 1,328.22
4. Step 4: Simplify right side
   3,793.76x = 7,555,969.86
5. Step 5: Solve for x
   x = 7,555,969.86/3,793.76
6. Step 6: Final answer
   x = 1,991.68