Finding the Fourth Proportional to 1,053.17, 1,453.53 and 611.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.17 : 1,453.53 = 611.34 : x
2. Step 2: Convert to fraction form
   1,053.17/1,453.53 = 611.34/x
3. Step 3: Cross multiply
   1,053.17x = 1,453.53 × 611.34
4. Step 4: Simplify right side
   1,053.17x = 888,601.03
5. Step 5: Solve for x
   x = 888,601.03/1,053.17
6. Step 6: Final answer
   x = 843.74