Finding the Fourth Proportional to 1,659.48, 2,478.90 and 1,227.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,659.48 : 2,478.90 = 1,227.48 : x
2. Step 2: Convert to fraction form
   1,659.48/2,478.90 = 1,227.48/x
3. Step 3: Cross multiply
   1,659.48x = 2,478.90 × 1,227.48
4. Step 4: Simplify right side
   1,659.48x = 3,042,800.17
5. Step 5: Solve for x
   x = 3,042,800.17/1,659.48
6. Step 6: Final answer
   x = 1,833.59