Finding the Fourth Proportional to 1,353.22, 1,865.91 and 1,103.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.22 : 1,865.91 = 1,103.76 : x
2. Step 2: Convert to fraction form
   1,353.22/1,865.91 = 1,103.76/x
3. Step 3: Cross multiply
   1,353.22x = 1,865.91 × 1,103.76
4. Step 4: Simplify right side
   1,353.22x = 2,059,516.82
5. Step 5: Solve for x
   x = 2,059,516.82/1,353.22
6. Step 6: Final answer
   x = 1,521.94