Finding the Fourth Proportional to 2,150.42, 3,227.65 and 1,055.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.42 : 3,227.65 = 1,055.57 : x
2. Step 2: Convert to fraction form
   2,150.42/3,227.65 = 1,055.57/x
3. Step 3: Cross multiply
   2,150.42x = 3,227.65 × 1,055.57
4. Step 4: Simplify right side
   2,150.42x = 3,406,991.73
5. Step 5: Solve for x
   x = 3,406,991.73/2,150.42
6. Step 6: Final answer
   x = 1,584.34