Finding the Fourth Proportional to 4,715.91, 7,073.06 and 1,428.53

Step by Step Solution

1. Step 1: Write the proportion equation
   4,715.91 : 7,073.06 = 1,428.53 : x
2. Step 2: Convert to fraction form
   4,715.91/7,073.06 = 1,428.53/x
3. Step 3: Cross multiply
   4,715.91x = 7,073.06 × 1,428.53
4. Step 4: Simplify right side
   4,715.91x = 10,104,035.89
5. Step 5: Solve for x
   x = 10,104,035.89/4,715.91
6. Step 6: Final answer
   x = 2,142.54