Finding the Fourth Proportional to 3,399.53, 5,099.76 and 1,059.70

Step by Step Solution

1. Step 1: Write the proportion equation
   3,399.53 : 5,099.76 = 1,059.70 : x
2. Step 2: Convert to fraction form
   3,399.53/5,099.76 = 1,059.70/x
3. Step 3: Cross multiply
   3,399.53x = 5,099.76 × 1,059.70
4. Step 4: Simplify right side
   3,399.53x = 5,404,215.67
5. Step 5: Solve for x
   x = 5,404,215.67/3,399.53
6. Step 6: Final answer
   x = 1,589.69