Finding the Fourth Proportional to 1,184.59, 1,634.94 and 687.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,184.59 : 1,634.94 = 687.35 : x
2. Step 2: Convert to fraction form
   1,184.59/1,634.94 = 687.35/x
3. Step 3: Cross multiply
   1,184.59x = 1,634.94 × 687.35
4. Step 4: Simplify right side
   1,184.59x = 1,123,780.10
5. Step 5: Solve for x
   x = 1,123,780.10/1,184.59
6. Step 6: Final answer
   x = 948.67