Finding the Fourth Proportional to 2,863.78, 4,295.59 and 916.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,863.78 : 4,295.59 = 916.10 : x
2. Step 2: Convert to fraction form
   2,863.78/4,295.59 = 916.10/x
3. Step 3: Cross multiply
   2,863.78x = 4,295.59 × 916.10
4. Step 4: Simplify right side
   2,863.78x = 3,935,190.00
5. Step 5: Solve for x
   x = 3,935,190.00/2,863.78
6. Step 6: Final answer
   x = 1,374.12