Finding the Fourth Proportional to 1,022.62, 1,410.73 and 648.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,022.62 : 1,410.73 = 648.96 : x
2. Step 2: Convert to fraction form
   1,022.62/1,410.73 = 648.96/x
3. Step 3: Cross multiply
   1,022.62x = 1,410.73 × 648.96
4. Step 4: Simplify right side
   1,022.62x = 915,507.34
5. Step 5: Solve for x
   x = 915,507.34/1,022.62
6. Step 6: Final answer
   x = 895.26