Finding the Fourth Proportional to 1,185.03, 1,635.31 and 653.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,185.03 : 1,635.31 = 653.89 : x
2. Step 2: Convert to fraction form
   1,185.03/1,635.31 = 653.89/x
3. Step 3: Cross multiply
   1,185.03x = 1,635.31 × 653.89
4. Step 4: Simplify right side
   1,185.03x = 1,069,312.86
5. Step 5: Solve for x
   x = 1,069,312.86/1,185.03
6. Step 6: Final answer
   x = 902.35