Finding the Fourth Proportional to 1,722.72, 2,376.72 and 1,102.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,722.72 : 2,376.72 = 1,102.08 : x
2. Step 2: Convert to fraction form
   1,722.72/2,376.72 = 1,102.08/x
3. Step 3: Cross multiply
   1,722.72x = 2,376.72 × 1,102.08
4. Step 4: Simplify right side
   1,722.72x = 2,619,335.58
5. Step 5: Solve for x
   x = 2,619,335.58/1,722.72
6. Step 6: Final answer
   x = 1,520.47