Finding the Fourth Proportional to 1,061.98, 1,591.42 and 513.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.98 : 1,591.42 = 513.52 : x
2. Step 2: Convert to fraction form
   1,061.98/1,591.42 = 513.52/x
3. Step 3: Cross multiply
   1,061.98x = 1,591.42 × 513.52
4. Step 4: Simplify right side
   1,061.98x = 817,226.00
5. Step 5: Solve for x
   x = 817,226.00/1,061.98
6. Step 6: Final answer
   x = 769.53