Finding the Fourth Proportional to 1,106, 1,647.94 and 1,039.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,106 : 1,647.94 = 1,039.76 : x
2. Step 2: Convert to fraction form
   1,106/1,647.94 = 1,039.76/x
3. Step 3: Cross multiply
   1,106x = 1,647.94 × 1,039.76
4. Step 4: Simplify right side
   1,106x = 1,713,462.09
5. Step 5: Solve for x
   x = 1,713,462.09/1,106
6. Step 6: Final answer
   x = 1,549.24