Finding the Fourth Proportional to 1,185.45, 1,635.98 and 654.39

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.45 : 1,635.98 = 654.39 : x
2. Step 2: Convert to fraction form
   1,185.45/1,635.98 = 654.39/x
3. Step 3: Cross multiply
   1,185.45x = 1,635.98 × 654.39
4. Step 4: Simplify right side
   1,185.45x = 1,070,570.28
5. Step 5: Solve for x
   x = 1,070,570.28/1,185.45
6. Step 6: Final answer
   x = 903.09