Finding the Fourth Proportional to 1,185.89, 1,636.45 and 654.75

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.89 : 1,636.45 = 654.75 : x
2. Step 2: Convert to fraction form
   1,185.89/1,636.45 = 654.75/x
3. Step 3: Cross multiply
   1,185.89x = 1,636.45 × 654.75
4. Step 4: Simplify right side
   1,185.89x = 1,071,465.64
5. Step 5: Solve for x
   x = 1,071,465.64/1,185.89
6. Step 6: Final answer
   x = 903.51