Finding the Fourth Proportional to 1,083.50, 1,495.50 and 618.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,083.50 : 1,495.50 = 618.02 : x
2. Step 2: Convert to fraction form
   1,083.50/1,495.50 = 618.02/x
3. Step 3: Cross multiply
   1,083.50x = 1,495.50 × 618.02
4. Step 4: Simplify right side
   1,083.50x = 924,248.91
5. Step 5: Solve for x
   x = 924,248.91/1,083.50
6. Step 6: Final answer
   x = 853.02