Finding the Fourth Proportional to 1,105.13, 1,524.45 and 805.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105.13 : 1,524.45 = 805.98 : x
2. Step 2: Convert to fraction form
   1,105.13/1,524.45 = 805.98/x
3. Step 3: Cross multiply
   1,105.13x = 1,524.45 × 805.98
4. Step 4: Simplify right side
   1,105.13x = 1,228,684.95
5. Step 5: Solve for x
   x = 1,228,684.95/1,105.13
6. Step 6: Final answer
   x = 1,111.80