Finding the Fourth Proportional to 1,184.49, 1,634.43 and 687.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,184.49 : 1,634.43 = 687.15 : x
2. Step 2: Convert to fraction form
   1,184.49/1,634.43 = 687.15/x
3. Step 3: Cross multiply
   1,184.49x = 1,634.43 × 687.15
4. Step 4: Simplify right side
   1,184.49x = 1,123,098.57
5. Step 5: Solve for x
   x = 1,123,098.57/1,184.49
6. Step 6: Final answer
   x = 948.17