Finding the Fourth Proportional to 3,438.56, 5,158.38 and 1,129.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,438.56 : 5,158.38 = 1,129.52 : x
2. Step 2: Convert to fraction form
   3,438.56/5,158.38 = 1,129.52/x
3. Step 3: Cross multiply
   3,438.56x = 5,158.38 × 1,129.52
4. Step 4: Simplify right side
   3,438.56x = 5,826,493.38
5. Step 5: Solve for x
   x = 5,826,493.38/3,438.56
6. Step 6: Final answer
   x = 1,694.46