Finding the Fourth Proportional to 1,088.82, 1,634.00 and 678.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,088.82 : 1,634.00 = 678.24 : x
2. Step 2: Convert to fraction form
   1,088.82/1,634.00 = 678.24/x
3. Step 3: Cross multiply
   1,088.82x = 1,634.00 × 678.24
4. Step 4: Simplify right side
   1,088.82x = 1,108,240.77
5. Step 5: Solve for x
   x = 1,108,240.77/1,088.82
6. Step 6: Final answer
   x = 1,017.84