Finding the Fourth Proportional to 1,683.99, 2,520.52 and 1,270.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,683.99 : 2,520.52 = 1,270.28 : x
2. Step 2: Convert to fraction form
   1,683.99/2,520.52 = 1,270.28/x
3. Step 3: Cross multiply
   1,683.99x = 2,520.52 × 1,270.28
4. Step 4: Simplify right side
   1,683.99x = 3,201,769.27
5. Step 5: Solve for x
   x = 3,201,769.27/1,683.99
6. Step 6: Final answer
   x = 1,901.30