Finding the Fourth Proportional to 1,059.27, 1,461.81 and 611.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,059.27 : 1,461.81 = 611.20 : x
2. Step 2: Convert to fraction form
   1,059.27/1,461.81 = 611.20/x
3. Step 3: Cross multiply
   1,059.27x = 1,461.81 × 611.20
4. Step 4: Simplify right side
   1,059.27x = 893,458.27
5. Step 5: Solve for x
   x = 893,458.27/1,059.27
6. Step 6: Final answer
   x = 843.47