Finding the Fourth Proportional to 1,057.62, 1,458.06 and 1,025.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,057.62 : 1,458.06 = 1,025.34 : x
2. Step 2: Convert to fraction form
   1,057.62/1,458.06 = 1,025.34/x
3. Step 3: Cross multiply
   1,057.62x = 1,458.06 × 1,025.34
4. Step 4: Simplify right side
   1,057.62x = 1,495,007.24
5. Step 5: Solve for x
   x = 1,495,007.24/1,057.62
6. Step 6: Final answer
   x = 1,413.56