Finding the Fourth Proportional to 1,155.89, 1,733.23 and 790.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155.89 : 1,733.23 = 790.79 : x
2. Step 2: Convert to fraction form
   1,155.89/1,733.23 = 790.79/x
3. Step 3: Cross multiply
   1,155.89x = 1,733.23 × 790.79
4. Step 4: Simplify right side
   1,155.89x = 1,370,613.27
5. Step 5: Solve for x
   x = 1,370,613.27/1,155.89
6. Step 6: Final answer
   x = 1,185.76