Finding the Fourth Proportional to 1,060.56, 1,463.82 and 618.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.56 : 1,463.82 = 618.51 : x
2. Step 2: Convert to fraction form
   1,060.56/1,463.82 = 618.51/x
3. Step 3: Cross multiply
   1,060.56x = 1,463.82 × 618.51
4. Step 4: Simplify right side
   1,060.56x = 905,387.31
5. Step 5: Solve for x
   x = 905,387.31/1,060.56
6. Step 6: Final answer
   x = 853.69