Finding the Fourth Proportional to 3,913.56, 5,870.46 and 1,316.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,913.56 : 5,870.46 = 1,316.52 : x
2. Step 2: Convert to fraction form
   3,913.56/5,870.46 = 1,316.52/x
3. Step 3: Cross multiply
   3,913.56x = 5,870.46 × 1,316.52
4. Step 4: Simplify right side
   3,913.56x = 7,728,578.00
5. Step 5: Solve for x
   x = 7,728,578.00/3,913.56
6. Step 6: Final answer
   x = 1,974.82