Finding the Fourth Proportional to 1,095.24, 1,638.60 and 1,003.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,095.24 : 1,638.60 = 1,003.31 : x
2. Step 2: Convert to fraction form
   1,095.24/1,638.60 = 1,003.31/x
3. Step 3: Cross multiply
   1,095.24x = 1,638.60 × 1,003.31
4. Step 4: Simplify right side
   1,095.24x = 1,644,023.77
5. Step 5: Solve for x
   x = 1,644,023.77/1,095.24
6. Step 6: Final answer
   x = 1,501.06