Finding the Fourth Proportional to 1,637.06, 2,456.27 and 816.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,637.06 : 2,456.27 = 816.02 : x
2. Step 2: Convert to fraction form
   1,637.06/2,456.27 = 816.02/x
3. Step 3: Cross multiply
   1,637.06x = 2,456.27 × 816.02
4. Step 4: Simplify right side
   1,637.06x = 2,004,379.76
5. Step 5: Solve for x
   x = 2,004,379.76/1,637.06
6. Step 6: Final answer
   x = 1,224.38