Finding the Fourth Proportional to 1,061.15, 1,592.13 and 513.29

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.15 : 1,592.13 = 513.29 : x
2. Step 2: Convert to fraction form
   1,061.15/1,592.13 = 513.29/x
3. Step 3: Cross multiply
   1,061.15x = 1,592.13 × 513.29
4. Step 4: Simplify right side
   1,061.15x = 817,213.88
5. Step 5: Solve for x
   x = 817,213.88/1,061.15
6. Step 6: Final answer
   x = 770.12