Finding the Fourth Proportional to 2,155.25, 3,231.50 and 1,059.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155.25 : 3,231.50 = 1,059.62 : x
2. Step 2: Convert to fraction form
   2,155.25/3,231.50 = 1,059.62/x
3. Step 3: Cross multiply
   2,155.25x = 3,231.50 × 1,059.62
4. Step 4: Simplify right side
   2,155.25x = 3,424,172.76
5. Step 5: Solve for x
   x = 3,424,172.76/2,155.25
6. Step 6: Final answer
   x = 1,588.76