Finding the Fourth Proportional to 1,103.60, 1,525.56 and 884.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,103.60 : 1,525.56 = 884.72 : x
2. Step 2: Convert to fraction form
   1,103.60/1,525.56 = 884.72/x
3. Step 3: Cross multiply
   1,103.60x = 1,525.56 × 884.72
4. Step 4: Simplify right side
   1,103.60x = 1,349,693.44
5. Step 5: Solve for x
   x = 1,349,693.44/1,103.60
6. Step 6: Final answer
   x = 1,222.99