Finding the Fourth Proportional to 2,630.42, 3,947.23 and 1,169.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,630.42 : 3,947.23 = 1,169.78 : x
2. Step 2: Convert to fraction form
   2,630.42/3,947.23 = 1,169.78/x
3. Step 3: Cross multiply
   2,630.42x = 3,947.23 × 1,169.78
4. Step 4: Simplify right side
   2,630.42x = 4,617,390.71
5. Step 5: Solve for x
   x = 4,617,390.71/2,630.42
6. Step 6: Final answer
   x = 1,755.38