Finding the Fourth Proportional to 1,030.04, 1,421.46 and 588.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,030.04 : 1,421.46 = 588.18 : x
2. Step 2: Convert to fraction form
   1,030.04/1,421.46 = 588.18/x
3. Step 3: Cross multiply
   1,030.04x = 1,421.46 × 588.18
4. Step 4: Simplify right side
   1,030.04x = 836,074.34
5. Step 5: Solve for x
   x = 836,074.34/1,030.04
6. Step 6: Final answer
   x = 811.70