Finding the Fourth Proportional to 2,910.78, 4,333.25 and 2,893.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,910.78 : 4,333.25 = 2,893.49 : x
2. Step 2: Convert to fraction form
   2,910.78/4,333.25 = 2,893.49/x
3. Step 3: Cross multiply
   2,910.78x = 4,333.25 × 2,893.49
4. Step 4: Simplify right side
   2,910.78x = 12,538,215.54
5. Step 5: Solve for x
   x = 12,538,215.54/2,910.78
6. Step 6: Final answer
   x = 4,307.51