Finding the Fourth Proportional to 1,126.56, 1,554.72 and 660.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,126.56 : 1,554.72 = 660.84 : x
2. Step 2: Convert to fraction form
   1,126.56/1,554.72 = 660.84/x
3. Step 3: Cross multiply
   1,126.56x = 1,554.72 × 660.84
4. Step 4: Simplify right side
   1,126.56x = 1,027,421.16
5. Step 5: Solve for x
   x = 1,027,421.16/1,126.56
6. Step 6: Final answer
   x = 912.00