Finding the Fourth Proportional to 1,101.69, 1,654.43 and 1,055.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,101.69 : 1,654.43 = 1,055.25 : x
2. Step 2: Convert to fraction form
   1,101.69/1,654.43 = 1,055.25/x
3. Step 3: Cross multiply
   1,101.69x = 1,654.43 × 1,055.25
4. Step 4: Simplify right side
   1,101.69x = 1,745,831.98
5. Step 5: Solve for x
   x = 1,745,831.98/1,101.69
6. Step 6: Final answer
   x = 1,584.69