Finding the Fourth Proportional to 2,784.77, 4,177.61 and 936.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,784.77 : 4,177.61 = 936.05 : x
2. Step 2: Convert to fraction form
   2,784.77/4,177.61 = 936.05/x
3. Step 3: Cross multiply
   2,784.77x = 4,177.61 × 936.05
4. Step 4: Simplify right side
   2,784.77x = 3,910,426.27
5. Step 5: Solve for x
   x = 3,910,426.27/2,784.77
6. Step 6: Final answer
   x = 1,404.22