Finding the Fourth Proportional to 1,019.58, 1,407.06 and 594.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.58 : 1,407.06 = 594.18 : x
2. Step 2: Convert to fraction form
   1,019.58/1,407.06 = 594.18/x
3. Step 3: Cross multiply
   1,019.58x = 1,407.06 × 594.18
4. Step 4: Simplify right side
   1,019.58x = 836,046.91
5. Step 5: Solve for x
   x = 836,046.91/1,019.58
6. Step 6: Final answer
   x = 819.99