Finding the Fourth Proportional to 1,169.46, 1,744.32 and 1,101.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,169.46 : 1,744.32 = 1,101.78 : x
2. Step 2: Convert to fraction form
   1,169.46/1,744.32 = 1,101.78/x
3. Step 3: Cross multiply
   1,169.46x = 1,744.32 × 1,101.78
4. Step 4: Simplify right side
   1,169.46x = 1,921,856.89
5. Step 5: Solve for x
   x = 1,921,856.89/1,169.46
6. Step 6: Final answer
   x = 1,643.37