Finding the Fourth Proportional to 1,078.50, 1,618.38 and 634.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.50 : 1,618.38 = 634.08 : x
2. Step 2: Convert to fraction form
   1,078.50/1,618.38 = 634.08/x
3. Step 3: Cross multiply
   1,078.50x = 1,618.38 × 634.08
4. Step 4: Simplify right side
   1,078.50x = 1,026,182.39
5. Step 5: Solve for x
   x = 1,026,182.39/1,078.50
6. Step 6: Final answer
   x = 951.49