Finding the Fourth Proportional to 1,126.34, 1,554.36 and 660.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,126.34 : 1,554.36 = 660.50 : x
2. Step 2: Convert to fraction form
   1,126.34/1,554.36 = 660.50/x
3. Step 3: Cross multiply
   1,126.34x = 1,554.36 × 660.50
4. Step 4: Simplify right side
   1,126.34x = 1,026,654.78
5. Step 5: Solve for x
   x = 1,026,654.78/1,126.34
6. Step 6: Final answer
   x = 911.50