Finding the Fourth Proportional to 1,105.89, 1,657.85 and 716.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.89 : 1,657.85 = 716.19 : x
2. Step 2: Convert to fraction form
   1,105.89/1,657.85 = 716.19/x
3. Step 3: Cross multiply
   1,105.89x = 1,657.85 × 716.19
4. Step 4: Simplify right side
   1,105.89x = 1,187,323.72
5. Step 5: Solve for x
   x = 1,187,323.72/1,105.89
6. Step 6: Final answer
   x = 1,073.64