Finding the Fourth Proportional to 1,542.27, 2,127.42 and 1,122.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,542.27 : 2,127.42 = 1,122.06 : x
2. Step 2: Convert to fraction form
   1,542.27/2,127.42 = 1,122.06/x
3. Step 3: Cross multiply
   1,542.27x = 2,127.42 × 1,122.06
4. Step 4: Simplify right side
   1,542.27x = 2,387,092.89
5. Step 5: Solve for x
   x = 2,387,092.89/1,542.27
6. Step 6: Final answer
   x = 1,547.78