Finding the Fourth Proportional to 2,111.76, 3,170.40 and 1,695.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,111.76 : 3,170.40 = 1,695.51 : x
2. Step 2: Convert to fraction form
   2,111.76/3,170.40 = 1,695.51/x
3. Step 3: Cross multiply
   2,111.76x = 3,170.40 × 1,695.51
4. Step 4: Simplify right side
   2,111.76x = 5,375,444.90
5. Step 5: Solve for x
   x = 5,375,444.90/2,111.76
6. Step 6: Final answer
   x = 2,545.48