Finding the Fourth Proportional to 2,886.48, 4,328.82 and 938.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,886.48 : 4,328.82 = 938.28 : x
2. Step 2: Convert to fraction form
   2,886.48/4,328.82 = 938.28/x
3. Step 3: Cross multiply
   2,886.48x = 4,328.82 × 938.28
4. Step 4: Simplify right side
   2,886.48x = 4,061,645.23
5. Step 5: Solve for x
   x = 4,061,645.23/2,886.48
6. Step 6: Final answer
   x = 1,407.13