Finding the Fourth Proportional to 1,126.89, 1,554.84 and 684.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,126.89 : 1,554.84 = 684.72 : x
2. Step 2: Convert to fraction form
   1,126.89/1,554.84 = 684.72/x
3. Step 3: Cross multiply
   1,126.89x = 1,554.84 × 684.72
4. Step 4: Simplify right side
   1,126.89x = 1,064,630.04
5. Step 5: Solve for x
   x = 1,064,630.04/1,126.89
6. Step 6: Final answer
   x = 944.75