Finding the Fourth Proportional to 1,083.87, 1,495.75 and 618.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.87 : 1,495.75 = 618.15 : x
2. Step 2: Convert to fraction form
   1,083.87/1,495.75 = 618.15/x
3. Step 3: Cross multiply
   1,083.87x = 1,495.75 × 618.15
4. Step 4: Simplify right side
   1,083.87x = 924,597.86
5. Step 5: Solve for x
   x = 924,597.86/1,083.87
6. Step 6: Final answer
   x = 853.05