Finding the Fourth Proportional to 1,088.69, 1,499.11 and 984.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.69 : 1,499.11 = 984.49 : x
2. Step 2: Convert to fraction form
   1,088.69/1,499.11 = 984.49/x
3. Step 3: Cross multiply
   1,088.69x = 1,499.11 × 984.49
4. Step 4: Simplify right side
   1,088.69x = 1,475,852.59
5. Step 5: Solve for x
   x = 1,475,852.59/1,088.69
6. Step 6: Final answer
   x = 1,355.63