Finding the Fourth Proportional to 1,061.08, 1,464.78 and 618.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.08 : 1,464.78 = 618.82 : x
2. Step 2: Convert to fraction form
   1,061.08/1,464.78 = 618.82/x
3. Step 3: Cross multiply
   1,061.08x = 1,464.78 × 618.82
4. Step 4: Simplify right side
   1,061.08x = 906,435.16
5. Step 5: Solve for x
   x = 906,435.16/1,061.08
6. Step 6: Final answer
   x = 854.26