Finding the Fourth Proportional to 1,030.44, 1,421.98 and 588.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030.44 : 1,421.98 = 588.34 : x
2. Step 2: Convert to fraction form
   1,030.44/1,421.98 = 588.34/x
3. Step 3: Cross multiply
   1,030.44x = 1,421.98 × 588.34
4. Step 4: Simplify right side
   1,030.44x = 836,607.71
5. Step 5: Solve for x
   x = 836,607.71/1,030.44
6. Step 6: Final answer
   x = 811.89