Finding the Fourth Proportional to 1,061.14, 1,591.12 and 540.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.14 : 1,591.12 = 540.82 : x
2. Step 2: Convert to fraction form
   1,061.14/1,591.12 = 540.82/x
3. Step 3: Cross multiply
   1,061.14x = 1,591.12 × 540.82
4. Step 4: Simplify right side
   1,061.14x = 860,509.52
5. Step 5: Solve for x
   x = 860,509.52/1,061.14
6. Step 6: Final answer
   x = 810.93