Finding the Fourth Proportional to 1,081.88, 1,493.07 and 609.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.88 : 1,493.07 = 609.83 : x
2. Step 2: Convert to fraction form
   1,081.88/1,493.07 = 609.83/x
3. Step 3: Cross multiply
   1,081.88x = 1,493.07 × 609.83
4. Step 4: Simplify right side
   1,081.88x = 910,518.16
5. Step 5: Solve for x
   x = 910,518.16/1,081.88
6. Step 6: Final answer
   x = 841.61