Finding the Fourth Proportional to 2,155.42, 3,234.15 and 1,060.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.42 : 3,234.15 = 1,060.72 : x
2. Step 2: Convert to fraction form
   2,155.42/3,234.15 = 1,060.72/x
3. Step 3: Cross multiply
   2,155.42x = 3,234.15 × 1,060.72
4. Step 4: Simplify right side
   2,155.42x = 3,430,527.59
5. Step 5: Solve for x
   x = 3,430,527.59/2,155.42
6. Step 6: Final answer
   x = 1,591.58