Finding the Fourth Proportional to 1,158.18, 1,739.34 and 1,096.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.18 : 1,739.34 = 1,096.62 : x
2. Step 2: Convert to fraction form
   1,158.18/1,739.34 = 1,096.62/x
3. Step 3: Cross multiply
   1,158.18x = 1,739.34 × 1,096.62
4. Step 4: Simplify right side
   1,158.18x = 1,907,395.03
5. Step 5: Solve for x
   x = 1,907,395.03/1,158.18
6. Step 6: Final answer
   x = 1,646.89