Finding the Fourth Proportional to 1,078.26, 1,615.89 and 491.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078.26 : 1,615.89 = 491.83 : x
2. Step 2: Convert to fraction form
   1,078.26/1,615.89 = 491.83/x
3. Step 3: Cross multiply
   1,078.26x = 1,615.89 × 491.83
4. Step 4: Simplify right side
   1,078.26x = 794,740.98
5. Step 5: Solve for x
   x = 794,740.98/1,078.26
6. Step 6: Final answer
   x = 737.06