Finding the Fourth Proportional to 1,945.71, 2,920.14 and 1,021.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.71 : 2,920.14 = 1,021.50 : x
2. Step 2: Convert to fraction form
   1,945.71/2,920.14 = 1,021.50/x
3. Step 3: Cross multiply
   1,945.71x = 2,920.14 × 1,021.50
4. Step 4: Simplify right side
   1,945.71x = 2,982,923.01
5. Step 5: Solve for x
   x = 2,982,923.01/1,945.71
6. Step 6: Final answer
   x = 1,533.08