Finding the Fourth Proportional to 3,916.78, 5,875.20 and 995.10

Step by Step Solution

1. Step 1: Write the proportion equation
   3,916.78 : 5,875.20 = 995.10 : x
2. Step 2: Convert to fraction form
   3,916.78/5,875.20 = 995.10/x
3. Step 3: Cross multiply
   3,916.78x = 5,875.20 × 995.10
4. Step 4: Simplify right side
   3,916.78x = 5,846,411.52
5. Step 5: Solve for x
   x = 5,846,411.52/3,916.78
6. Step 6: Final answer
   x = 1,492.66