Finding the Fourth Proportional to 1,141.56, 1,710.72 and 654.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,141.56 : 1,710.72 = 654.48 : x
2. Step 2: Convert to fraction form
   1,141.56/1,710.72 = 654.48/x
3. Step 3: Cross multiply
   1,141.56x = 1,710.72 × 654.48
4. Step 4: Simplify right side
   1,141.56x = 1,119,632.03
5. Step 5: Solve for x
   x = 1,119,632.03/1,141.56
6. Step 6: Final answer
   x = 980.79