Finding the Fourth Proportional to 1,030.29, 1,421.81 and 588.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030.29 : 1,421.81 = 588.43 : x
2. Step 2: Convert to fraction form
   1,030.29/1,421.81 = 588.43/x
3. Step 3: Cross multiply
   1,030.29x = 1,421.81 × 588.43
4. Step 4: Simplify right side
   1,030.29x = 836,632.72
5. Step 5: Solve for x
   x = 836,632.72/1,030.29
6. Step 6: Final answer
   x = 812.04