Finding the Fourth Proportional to 1,061.84, 1,590.96 and 514.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.84 : 1,590.96 = 514.28 : x
2. Step 2: Convert to fraction form
   1,061.84/1,590.96 = 514.28/x
3. Step 3: Cross multiply
   1,061.84x = 1,590.96 × 514.28
4. Step 4: Simplify right side
   1,061.84x = 818,198.91
5. Step 5: Solve for x
   x = 818,198.91/1,061.84
6. Step 6: Final answer
   x = 770.55