Finding the Fourth Proportional to 2,697.72, 3,720.06 and 1,911.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,697.72 : 3,720.06 = 1,911.48 : x
2. Step 2: Convert to fraction form
   2,697.72/3,720.06 = 1,911.48/x
3. Step 3: Cross multiply
   2,697.72x = 3,720.06 × 1,911.48
4. Step 4: Simplify right side
   2,697.72x = 7,110,820.29
5. Step 5: Solve for x
   x = 7,110,820.29/2,697.72
6. Step 6: Final answer
   x = 2,635.86