Finding the Fourth Proportional to 1,055.18, 1,457.25 and 662.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.18 : 1,457.25 = 662.42 : x
2. Step 2: Convert to fraction form
   1,055.18/1,457.25 = 662.42/x
3. Step 3: Cross multiply
   1,055.18x = 1,457.25 × 662.42
4. Step 4: Simplify right side
   1,055.18x = 965,311.55
5. Step 5: Solve for x
   x = 965,311.55/1,055.18
6. Step 6: Final answer
   x = 914.83