Finding the Fourth Proportional to 1,060.56, 1,463.97 and 618.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,060.56 : 1,463.97 = 618.47 : x
2. Step 2: Convert to fraction form
   1,060.56/1,463.97 = 618.47/x
3. Step 3: Cross multiply
   1,060.56x = 1,463.97 × 618.47
4. Step 4: Simplify right side
   1,060.56x = 905,422.02
5. Step 5: Solve for x
   x = 905,422.02/1,060.56
6. Step 6: Final answer
   x = 853.72