Finding the Fourth Proportional to 1,053.62, 1,453.94 and 611.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,053.62 : 1,453.94 = 611.50 : x
2. Step 2: Convert to fraction form
   1,053.62/1,453.94 = 611.50/x
3. Step 3: Cross multiply
   1,053.62x = 1,453.94 × 611.50
4. Step 4: Simplify right side
   1,053.62x = 889,084.31
5. Step 5: Solve for x
   x = 889,084.31/1,053.62
6. Step 6: Final answer
   x = 843.84