Finding the Fourth Proportional to 1,030.75, 1,422.56 and 588.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030.75 : 1,422.56 = 588.69 : x
2. Step 2: Convert to fraction form
   1,030.75/1,422.56 = 588.69/x
3. Step 3: Cross multiply
   1,030.75x = 1,422.56 × 588.69
4. Step 4: Simplify right side
   1,030.75x = 837,446.85
5. Step 5: Solve for x
   x = 837,446.85/1,030.75
6. Step 6: Final answer
   x = 812.46