Finding the Fourth Proportional to 1,017.59, 1,528.82 and 653.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,017.59 : 1,528.82 = 653.09 : x
2. Step 2: Convert to fraction form
   1,017.59/1,528.82 = 653.09/x
3. Step 3: Cross multiply
   1,017.59x = 1,528.82 × 653.09
4. Step 4: Simplify right side
   1,017.59x = 998,460.06
5. Step 5: Solve for x
   x = 998,460.06/1,017.59
6. Step 6: Final answer
   x = 981.20