Finding the Fourth Proportional to 3,130.50, 4,696.47 and 1,078.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,130.50 : 4,696.47 = 1,078.50 : x
2. Step 2: Convert to fraction form
   3,130.50/4,696.47 = 1,078.50/x
3. Step 3: Cross multiply
   3,130.50x = 4,696.47 × 1,078.50
4. Step 4: Simplify right side
   3,130.50x = 5,065,142.90
5. Step 5: Solve for x
   x = 5,065,142.90/3,130.50
6. Step 6: Final answer
   x = 1,618.00