Finding the Fourth Proportional to 1,061.39, 1,592.50 and 513.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.39 : 1,592.50 = 513.53 : x
2. Step 2: Convert to fraction form
   1,061.39/1,592.50 = 513.53/x
3. Step 3: Cross multiply
   1,061.39x = 1,592.50 × 513.53
4. Step 4: Simplify right side
   1,061.39x = 817,799.22
5. Step 5: Solve for x
   x = 817,799.22/1,061.39
6. Step 6: Final answer
   x = 770.50