Finding the Fourth Proportional to 1,013.57, 1,398.72 and 547.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,013.57 : 1,398.72 = 547.82 : x
2. Step 2: Convert to fraction form
   1,013.57/1,398.72 = 547.82/x
3. Step 3: Cross multiply
   1,013.57x = 1,398.72 × 547.82
4. Step 4: Simplify right side
   1,013.57x = 766,237.06
5. Step 5: Solve for x
   x = 766,237.06/1,013.57
6. Step 6: Final answer
   x = 755.98