Finding the Fourth Proportional to 1,081.87, 1,493.03 and 634.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.87 : 1,493.03 = 634.03 : x
2. Step 2: Convert to fraction form
   1,081.87/1,493.03 = 634.03/x
3. Step 3: Cross multiply
   1,081.87x = 1,493.03 × 634.03
4. Step 4: Simplify right side
   1,081.87x = 946,623.66
5. Step 5: Solve for x
   x = 946,623.66/1,081.87
6. Step 6: Final answer
   x = 874.99