Finding the Fourth Proportional to 1,518.57, 2,273.91 and 902.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,518.57 : 2,273.91 = 902.70 : x
2. Step 2: Convert to fraction form
   1,518.57/2,273.91 = 902.70/x
3. Step 3: Cross multiply
   1,518.57x = 2,273.91 × 902.70
4. Step 4: Simplify right side
   1,518.57x = 2,052,658.56
5. Step 5: Solve for x
   x = 2,052,658.56/1,518.57
6. Step 6: Final answer
   x = 1,351.70