Finding the Fourth Proportional to 1,095.62, 1,635.63 and 1,057.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.62 : 1,635.63 = 1,057.18 : x
2. Step 2: Convert to fraction form
   1,095.62/1,635.63 = 1,057.18/x
3. Step 3: Cross multiply
   1,095.62x = 1,635.63 × 1,057.18
4. Step 4: Simplify right side
   1,095.62x = 1,729,141.86
5. Step 5: Solve for x
   x = 1,729,141.86/1,095.62
6. Step 6: Final answer
   x = 1,578.23