Finding the Fourth Proportional to 2,788.19, 4,182.37 and 939.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788.19 : 4,182.37 = 939.37 : x
2. Step 2: Convert to fraction form
   2,788.19/4,182.37 = 939.37/x
3. Step 3: Cross multiply
   2,788.19x = 4,182.37 × 939.37
4. Step 4: Simplify right side
   2,788.19x = 3,928,780.10
5. Step 5: Solve for x
   x = 3,928,780.10/2,788.19
6. Step 6: Final answer
   x = 1,409.08