Finding the Fourth Proportional to 3,078.30, 4,618.71 and 1,130.64

Step by Step Solution

1. Step 1: Write the proportion equation
   3,078.30 : 4,618.71 = 1,130.64 : x
2. Step 2: Convert to fraction form
   3,078.30/4,618.71 = 1,130.64/x
3. Step 3: Cross multiply
   3,078.30x = 4,618.71 × 1,130.64
4. Step 4: Simplify right side
   3,078.30x = 5,222,098.27
5. Step 5: Solve for x
   x = 5,222,098.27/3,078.30
6. Step 6: Final answer
   x = 1,696.42