Finding the Fourth Proportional to 3,439.91, 5,158.29 and 1,099.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,439.91 : 5,158.29 = 1,099.46 : x
2. Step 2: Convert to fraction form
   3,439.91/5,158.29 = 1,099.46/x
3. Step 3: Cross multiply
   3,439.91x = 5,158.29 × 1,099.46
4. Step 4: Simplify right side
   3,439.91x = 5,671,333.52
5. Step 5: Solve for x
   x = 5,671,333.52/3,439.91
6. Step 6: Final answer
   x = 1,648.69