Finding the Fourth Proportional to 1,892.41, 2,833.30 and 1,428.73

Step by Step Solution

1. Step 1: Write the proportion equation
   1,892.41 : 2,833.30 = 1,428.73 : x
2. Step 2: Convert to fraction form
   1,892.41/2,833.30 = 1,428.73/x
3. Step 3: Cross multiply
   1,892.41x = 2,833.30 × 1,428.73
4. Step 4: Simplify right side
   1,892.41x = 4,048,020.71
5. Step 5: Solve for x
   x = 4,048,020.71/1,892.41
6. Step 6: Final answer
   x = 2,139.08