Finding the Fourth Proportional to 2,788.67, 4,180.06 and 939.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,788.67 : 4,180.06 = 939.14 : x
2. Step 2: Convert to fraction form
   2,788.67/4,180.06 = 939.14/x
3. Step 3: Cross multiply
   2,788.67x = 4,180.06 × 939.14
4. Step 4: Simplify right side
   2,788.67x = 3,925,638.30
5. Step 5: Solve for x
   x = 3,925,638.30/2,788.67
6. Step 6: Final answer
   x = 1,407.71