Finding the Fourth Proportional to 4,800.42, 7,200.45 and 1,513.71

Step by Step Solution

1. Step 1: Write the proportion equation
   4,800.42 : 7,200.45 = 1,513.71 : x
2. Step 2: Convert to fraction form
   4,800.42/7,200.45 = 1,513.71/x
3. Step 3: Cross multiply
   4,800.42x = 7,200.45 × 1,513.71
4. Step 4: Simplify right side
   4,800.42x = 10,899,393.17
5. Step 5: Solve for x
   x = 10,899,393.17/4,800.42
6. Step 6: Final answer
   x = 2,270.51