Finding the Fourth Proportional to 1,021.56, 1,533.96 and 656.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,021.56 : 1,533.96 = 656.52 : x
2. Step 2: Convert to fraction form
   1,021.56/1,533.96 = 656.52/x
3. Step 3: Cross multiply
   1,021.56x = 1,533.96 × 656.52
4. Step 4: Simplify right side
   1,021.56x = 1,007,075.42
5. Step 5: Solve for x
   x = 1,007,075.42/1,021.56
6. Step 6: Final answer
   x = 985.82