Finding the Fourth Proportional to 2,642.28, 3,962.52 and 910.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,642.28 : 3,962.52 = 910.56 : x
2. Step 2: Convert to fraction form
   2,642.28/3,962.52 = 910.56/x
3. Step 3: Cross multiply
   2,642.28x = 3,962.52 × 910.56
4. Step 4: Simplify right side
   2,642.28x = 3,608,112.21
5. Step 5: Solve for x
   x = 3,608,112.21/2,642.28
6. Step 6: Final answer
   x = 1,365.53