Finding the Fourth Proportional to 2,156.10, 3,234.42 and 1,059.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156.10 : 3,234.42 = 1,059.54 : x
2. Step 2: Convert to fraction form
   2,156.10/3,234.42 = 1,059.54/x
3. Step 3: Cross multiply
   2,156.10x = 3,234.42 × 1,059.54
4. Step 4: Simplify right side
   2,156.10x = 3,426,997.37
5. Step 5: Solve for x
   x = 3,426,997.37/2,156.10
6. Step 6: Final answer
   x = 1,589.44