Finding the Fourth Proportional to 1,184.44, 1,634.72 and 687.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,184.44 : 1,634.72 = 687.49 : x
2. Step 2: Convert to fraction form
   1,184.44/1,634.72 = 687.49/x
3. Step 3: Cross multiply
   1,184.44x = 1,634.72 × 687.49
4. Step 4: Simplify right side
   1,184.44x = 1,123,849.03
5. Step 5: Solve for x
   x = 1,123,849.03/1,184.44
6. Step 6: Final answer
   x = 948.85