Finding the Fourth Proportional to 1,803.72, 2,487.86 and 1,105.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,803.72 : 2,487.86 = 1,105.48 : x
2. Step 2: Convert to fraction form
   1,803.72/2,487.86 = 1,105.48/x
3. Step 3: Cross multiply
   1,803.72x = 2,487.86 × 1,105.48
4. Step 4: Simplify right side
   1,803.72x = 2,750,279.47
5. Step 5: Solve for x
   x = 2,750,279.47/1,803.72
6. Step 6: Final answer
   x = 1,524.78