Finding the Fourth Proportional to 1,089.98, 1,635.24 and 895.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089.98 : 1,635.24 = 895.31 : x
2. Step 2: Convert to fraction form
   1,089.98/1,635.24 = 895.31/x
3. Step 3: Cross multiply
   1,089.98x = 1,635.24 × 895.31
4. Step 4: Simplify right side
   1,089.98x = 1,464,046.72
5. Step 5: Solve for x
   x = 1,464,046.72/1,089.98
6. Step 6: Final answer
   x = 1,343.19