Finding the Fourth Proportional to 4,890.98, 7,337.56 and 1,428.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,890.98 : 7,337.56 = 1,428.50 : x
2. Step 2: Convert to fraction form
   4,890.98/7,337.56 = 1,428.50/x
3. Step 3: Cross multiply
   4,890.98x = 7,337.56 × 1,428.50
4. Step 4: Simplify right side
   4,890.98x = 10,481,704.46
5. Step 5: Solve for x
   x = 10,481,704.46/4,890.98
6. Step 6: Final answer
   x = 2,143.07