Finding the Fourth Proportional to 1,103.88, 1,648.44 and 1,047.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.88 : 1,648.44 = 1,047.72 : x
2. Step 2: Convert to fraction form
   1,103.88/1,648.44 = 1,047.72/x
3. Step 3: Cross multiply
   1,103.88x = 1,648.44 × 1,047.72
4. Step 4: Simplify right side
   1,103.88x = 1,727,103.56
5. Step 5: Solve for x
   x = 1,727,103.56/1,103.88
6. Step 6: Final answer
   x = 1,564.58