Finding the Fourth Proportional to 1,061.37, 1,464.56 and 618.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.37 : 1,464.56 = 618.95 : x
2. Step 2: Convert to fraction form
   1,061.37/1,464.56 = 618.95/x
3. Step 3: Cross multiply
   1,061.37x = 1,464.56 × 618.95
4. Step 4: Simplify right side
   1,061.37x = 906,492.30
5. Step 5: Solve for x
   x = 906,492.30/1,061.37
6. Step 6: Final answer
   x = 854.08