Finding the Fourth Proportional to 1,046.56, 1,443.06 and 667.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,046.56 : 1,443.06 = 667.94 : x
2. Step 2: Convert to fraction form
   1,046.56/1,443.06 = 667.94/x
3. Step 3: Cross multiply
   1,046.56x = 1,443.06 × 667.94
4. Step 4: Simplify right side
   1,046.56x = 963,875.56
5. Step 5: Solve for x
   x = 963,875.56/1,046.56
6. Step 6: Final answer
   x = 921.00