Finding the Fourth Proportional to 1,126.16, 1,553.82 and 684.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,126.16 : 1,553.82 = 684.05 : x
2. Step 2: Convert to fraction form
   1,126.16/1,553.82 = 684.05/x
3. Step 3: Cross multiply
   1,126.16x = 1,553.82 × 684.05
4. Step 4: Simplify right side
   1,126.16x = 1,062,882.80
5. Step 5: Solve for x
   x = 1,062,882.80/1,126.16
6. Step 6: Final answer
   x = 943.82