Finding the Fourth Proportional to 1,126.46, 1,688.34 and 605.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,126.46 : 1,688.34 = 605.72 : x
2. Step 2: Convert to fraction form
   1,126.46/1,688.34 = 605.72/x
3. Step 3: Cross multiply
   1,126.46x = 1,688.34 × 605.72
4. Step 4: Simplify right side
   1,126.46x = 1,022,661.30
5. Step 5: Solve for x
   x = 1,022,661.30/1,126.46
6. Step 6: Final answer
   x = 907.85