Finding the Fourth Proportional to 1,030.70, 1,422.33 and 588.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030.70 : 1,422.33 = 588.59 : x
2. Step 2: Convert to fraction form
   1,030.70/1,422.33 = 588.59/x
3. Step 3: Cross multiply
   1,030.70x = 1,422.33 × 588.59
4. Step 4: Simplify right side
   1,030.70x = 837,162.10
5. Step 5: Solve for x
   x = 837,162.10/1,030.70
6. Step 6: Final answer
   x = 812.23