Finding the Fourth Proportional to 1,563.12, 2,340.86 and 1,013.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,563.12 : 2,340.86 = 1,013.72 : x
2. Step 2: Convert to fraction form
   1,563.12/2,340.86 = 1,013.72/x
3. Step 3: Cross multiply
   1,563.12x = 2,340.86 × 1,013.72
4. Step 4: Simplify right side
   1,563.12x = 2,372,976.60
5. Step 5: Solve for x
   x = 2,372,976.60/1,563.12
6. Step 6: Final answer
   x = 1,518.10