Finding the Fourth Proportional to 2,151.40, 3,227.46 and 1,055.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,151.40 : 3,227.46 = 1,055.62 : x
2. Step 2: Convert to fraction form
   2,151.40/3,227.46 = 1,055.62/x
3. Step 3: Cross multiply
   2,151.40x = 3,227.46 × 1,055.62
4. Step 4: Simplify right side
   2,151.40x = 3,406,971.33
5. Step 5: Solve for x
   x = 3,406,971.33/2,151.40
6. Step 6: Final answer
   x = 1,583.61