Finding the Fourth Proportional to 2,102.72, 3,159.30 and 1,362.80

Step by Step Solution

1. Step 1: Write the proportion equation
   2,102.72 : 3,159.30 = 1,362.80 : x
2. Step 2: Convert to fraction form
   2,102.72/3,159.30 = 1,362.80/x
3. Step 3: Cross multiply
   2,102.72x = 3,159.30 × 1,362.80
4. Step 4: Simplify right side
   2,102.72x = 4,305,494.04
5. Step 5: Solve for x
   x = 4,305,494.04/2,102.72
6. Step 6: Final answer
   x = 2,047.58