Finding the Fourth Proportional to 5,401.70, 8,102.73 and 1,505.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,401.70 : 8,102.73 = 1,505.78 : x
2. Step 2: Convert to fraction form
   5,401.70/8,102.73 = 1,505.78/x
3. Step 3: Cross multiply
   5,401.70x = 8,102.73 × 1,505.78
4. Step 4: Simplify right side
   5,401.70x = 12,200,928.78
5. Step 5: Solve for x
   x = 12,200,928.78/5,401.70
6. Step 6: Final answer
   x = 2,258.72