Finding the Fourth Proportional to 1,144.99, 1,727.80 and 1,104.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,144.99 : 1,727.80 = 1,104.31 : x
2. Step 2: Convert to fraction form
   1,144.99/1,727.80 = 1,104.31/x
3. Step 3: Cross multiply
   1,144.99x = 1,727.80 × 1,104.31
4. Step 4: Simplify right side
   1,144.99x = 1,908,026.82
5. Step 5: Solve for x
   x = 1,908,026.82/1,144.99
6. Step 6: Final answer
   x = 1,666.41