Finding the Fourth Proportional to 1,004.56, 1,386.22 and 611.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,004.56 : 1,386.22 = 611.52 : x
2. Step 2: Convert to fraction form
   1,004.56/1,386.22 = 611.52/x
3. Step 3: Cross multiply
   1,004.56x = 1,386.22 × 611.52
4. Step 4: Simplify right side
   1,004.56x = 847,701.25
5. Step 5: Solve for x
   x = 847,701.25/1,004.56
6. Step 6: Final answer
   x = 843.85