Finding the Fourth Proportional to 1,060.79, 1,463.37 and 618.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.79 : 1,463.37 = 618.39 : x
2. Step 2: Convert to fraction form
   1,060.79/1,463.37 = 618.39/x
3. Step 3: Cross multiply
   1,060.79x = 1,463.37 × 618.39
4. Step 4: Simplify right side
   1,060.79x = 904,933.37
5. Step 5: Solve for x
   x = 904,933.37/1,060.79
6. Step 6: Final answer
   x = 853.08