Finding the Fourth Proportional to 1,131.15, 1,697.30 and 546.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,131.15 : 1,697.30 = 546.65 : x
2. Step 2: Convert to fraction form
   1,131.15/1,697.30 = 546.65/x
3. Step 3: Cross multiply
   1,131.15x = 1,697.30 × 546.65
4. Step 4: Simplify right side
   1,131.15x = 927,817.83
5. Step 5: Solve for x
   x = 927,817.83/1,131.15
6. Step 6: Final answer
   x = 820.24