Finding the Fourth Proportional to 1,019.59, 1,527.98 and 531.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,019.59 : 1,527.98 = 531.63 : x
2. Step 2: Convert to fraction form
   1,019.59/1,527.98 = 531.63/x
3. Step 3: Cross multiply
   1,019.59x = 1,527.98 × 531.63
4. Step 4: Simplify right side
   1,019.59x = 812,320.01
5. Step 5: Solve for x
   x = 812,320.01/1,019.59
6. Step 6: Final answer
   x = 796.71