Finding the Fourth Proportional to 2,152.39, 3,230.60 and 1,057.54

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.39 : 3,230.60 = 1,057.54 : x
2. Step 2: Convert to fraction form
   2,152.39/3,230.60 = 1,057.54/x
3. Step 3: Cross multiply
   2,152.39x = 3,230.60 × 1,057.54
4. Step 4: Simplify right side
   2,152.39x = 3,416,483.29
5. Step 5: Solve for x
   x = 3,416,483.29/2,152.39
6. Step 6: Final answer
   x = 1,587.30