Finding the Fourth Proportional to 2,784.21, 4,176.52 and 935.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.21 : 4,176.52 = 935.31 : x
2. Step 2: Convert to fraction form
   2,784.21/4,176.52 = 935.31/x
3. Step 3: Cross multiply
   2,784.21x = 4,176.52 × 935.31
4. Step 4: Simplify right side
   2,784.21x = 3,906,340.92
5. Step 5: Solve for x
   x = 3,906,340.92/2,784.21
6. Step 6: Final answer
   x = 1,403.03