Finding the Fourth Proportional to 1,061.06, 1,464.46 and 687.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.06 : 1,464.46 = 687.84 : x
2. Step 2: Convert to fraction form
   1,061.06/1,464.46 = 687.84/x
3. Step 3: Cross multiply
   1,061.06x = 1,464.46 × 687.84
4. Step 4: Simplify right side
   1,061.06x = 1,007,314.17
5. Step 5: Solve for x
   x = 1,007,314.17/1,061.06
6. Step 6: Final answer
   x = 949.35