Finding the Fourth Proportional to 1,101.93, 1,519.52 and 770.23

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.93 : 1,519.52 = 770.23 : x
2. Step 2: Convert to fraction form
   1,101.93/1,519.52 = 770.23/x
3. Step 3: Cross multiply
   1,101.93x = 1,519.52 × 770.23
4. Step 4: Simplify right side
   1,101.93x = 1,170,379.89
5. Step 5: Solve for x
   x = 1,170,379.89/1,101.93
6. Step 6: Final answer
   x = 1,062.12