Finding the Fourth Proportional to 1,019.79, 1,407.05 and 594.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.79 : 1,407.05 = 594.49 : x
2. Step 2: Convert to fraction form
   1,019.79/1,407.05 = 594.49/x
3. Step 3: Cross multiply
   1,019.79x = 1,407.05 × 594.49
4. Step 4: Simplify right side
   1,019.79x = 836,470.12
5. Step 5: Solve for x
   x = 836,470.12/1,019.79
6. Step 6: Final answer
   x = 820.24