Finding the Fourth Proportional to 1,184.71, 1,634.96 and 687.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,184.71 : 1,634.96 = 687.47 : x
2. Step 2: Convert to fraction form
   1,184.71/1,634.96 = 687.47/x
3. Step 3: Cross multiply
   1,184.71x = 1,634.96 × 687.47
4. Step 4: Simplify right side
   1,184.71x = 1,123,986.76
5. Step 5: Solve for x
   x = 1,123,986.76/1,184.71
6. Step 6: Final answer
   x = 948.74