Finding the Fourth Proportional to 1,495.72, 2,244.88 and 618.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,495.72 : 2,244.88 = 618.72 : x
2. Step 2: Convert to fraction form
   1,495.72/2,244.88 = 618.72/x
3. Step 3: Cross multiply
   1,495.72x = 2,244.88 × 618.72
4. Step 4: Simplify right side
   1,495.72x = 1,388,952.15
5. Step 5: Solve for x
   x = 1,388,952.15/1,495.72
6. Step 6: Final answer
   x = 928.62