Finding the Fourth Proportional to 2,909.72, 4,365.12 and 1,179.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,909.72 : 4,365.12 = 1,179.56 : x
2. Step 2: Convert to fraction form
   2,909.72/4,365.12 = 1,179.56/x
3. Step 3: Cross multiply
   2,909.72x = 4,365.12 × 1,179.56
4. Step 4: Simplify right side
   2,909.72x = 5,148,920.95
5. Step 5: Solve for x
   x = 5,148,920.95/2,909.72
6. Step 6: Final answer
   x = 1,769.56