Finding the Fourth Proportional to 1,061.02, 1,464.09 and 618.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.02 : 1,464.09 = 618.88 : x
2. Step 2: Convert to fraction form
   1,061.02/1,464.09 = 618.88/x
3. Step 3: Cross multiply
   1,061.02x = 1,464.09 × 618.88
4. Step 4: Simplify right side
   1,061.02x = 906,096.02
5. Step 5: Solve for x
   x = 906,096.02/1,061.02
6. Step 6: Final answer
   x = 853.99