Finding the Fourth Proportional to 1,092.49, 1,629.91 and 1,040.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,092.49 : 1,629.91 = 1,040.31 : x
2. Step 2: Convert to fraction form
   1,092.49/1,629.91 = 1,040.31/x
3. Step 3: Cross multiply
   1,092.49x = 1,629.91 × 1,040.31
4. Step 4: Simplify right side
   1,092.49x = 1,695,607.12
5. Step 5: Solve for x
   x = 1,695,607.12/1,092.49
6. Step 6: Final answer
   x = 1,552.06