Finding the Fourth Proportional to 3,898.16, 5,847.28 and 1,300.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,898.16 : 5,847.28 = 1,300.80 : x
2. Step 2: Convert to fraction form
   3,898.16/5,847.28 = 1,300.80/x
3. Step 3: Cross multiply
   3,898.16x = 5,847.28 × 1,300.80
4. Step 4: Simplify right side
   3,898.16x = 7,606,141.82
5. Step 5: Solve for x
   x = 7,606,141.82/3,898.16
6. Step 6: Final answer
   x = 1,951.21