Finding the Fourth Proportional to 5,940.72, 8,910.72 and 1,780.74

Step by Step Solution

1. Step 1: Write the proportion equation
   5,940.72 : 8,910.72 = 1,780.74 : x
2. Step 2: Convert to fraction form
   5,940.72/8,910.72 = 1,780.74/x
3. Step 3: Cross multiply
   5,940.72x = 8,910.72 × 1,780.74
4. Step 4: Simplify right side
   5,940.72x = 15,867,675.53
5. Step 5: Solve for x
   x = 15,867,675.53/5,940.72
6. Step 6: Final answer
   x = 2,671.00