Finding the Fourth Proportional to 3,375.28, 5,062.86 and 1,066.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,375.28 : 5,062.86 = 1,066.78 : x
2. Step 2: Convert to fraction form
   3,375.28/5,062.86 = 1,066.78/x
3. Step 3: Cross multiply
   3,375.28x = 5,062.86 × 1,066.78
4. Step 4: Simplify right side
   3,375.28x = 5,400,957.79
5. Step 5: Solve for x
   x = 5,400,957.79/3,375.28
6. Step 6: Final answer
   x = 1,600.15