Finding the Fourth Proportional to 1,563.54, 2,155.73 and 1,003.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.54 : 2,155.73 = 1,003.02 : x
2. Step 2: Convert to fraction form
   1,563.54/2,155.73 = 1,003.02/x
3. Step 3: Cross multiply
   1,563.54x = 2,155.73 × 1,003.02
4. Step 4: Simplify right side
   1,563.54x = 2,162,235.29
5. Step 5: Solve for x
   x = 2,162,235.29/1,563.54
6. Step 6: Final answer
   x = 1,382.91