Finding the Fourth Proportional to 2,156.42, 3,234.60 and 1,059.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156.42 : 3,234.60 = 1,059.48 : x
2. Step 2: Convert to fraction form
   2,156.42/3,234.60 = 1,059.48/x
3. Step 3: Cross multiply
   2,156.42x = 3,234.60 × 1,059.48
4. Step 4: Simplify right side
   2,156.42x = 3,426,994.01
5. Step 5: Solve for x
   x = 3,426,994.01/2,156.42
6. Step 6: Final answer
   x = 1,589.20