Finding the Fourth Proportional to 1,053.68, 1,452.71 and 680.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.68 : 1,452.71 = 680.00 : x
2. Step 2: Convert to fraction form
   1,053.68/1,452.71 = 680.00/x
3. Step 3: Cross multiply
   1,053.68x = 1,452.71 × 680.00
4. Step 4: Simplify right side
   1,053.68x = 987,837.24
5. Step 5: Solve for x
   x = 987,837.24/1,053.68
6. Step 6: Final answer
   x = 937.52