Finding the Fourth Proportional to 1,184.91, 1,635.32 and 687.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,184.91 : 1,635.32 = 687.83 : x
2. Step 2: Convert to fraction form
   1,184.91/1,635.32 = 687.83/x
3. Step 3: Cross multiply
   1,184.91x = 1,635.32 × 687.83
4. Step 4: Simplify right side
   1,184.91x = 1,124,810.54
5. Step 5: Solve for x
   x = 1,124,810.54/1,184.91
6. Step 6: Final answer
   x = 949.28