Finding the Fourth Proportional to 1,030.82, 1,422.46 and 611.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030.82 : 1,422.46 = 611.15 : x
2. Step 2: Convert to fraction form
   1,030.82/1,422.46 = 611.15/x
3. Step 3: Cross multiply
   1,030.82x = 1,422.46 × 611.15
4. Step 4: Simplify right side
   1,030.82x = 869,336.43
5. Step 5: Solve for x
   x = 869,336.43/1,030.82
6. Step 6: Final answer
   x = 843.34