Finding the Fourth Proportional to 1,053.69, 1,453.69 and 660.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.69 : 1,453.69 = 660.03 : x
2. Step 2: Convert to fraction form
   1,053.69/1,453.69 = 660.03/x
3. Step 3: Cross multiply
   1,053.69x = 1,453.69 × 660.03
4. Step 4: Simplify right side
   1,053.69x = 959,479.01
5. Step 5: Solve for x
   x = 959,479.01/1,053.69
6. Step 6: Final answer
   x = 910.59