Finding the Fourth Proportional to 2,119.50, 3,175.20 and 1,655.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,119.50 : 3,175.20 = 1,655.10 : x
2. Step 2: Convert to fraction form
   2,119.50/3,175.20 = 1,655.10/x
3. Step 3: Cross multiply
   2,119.50x = 3,175.20 × 1,655.10
4. Step 4: Simplify right side
   2,119.50x = 5,255,273.52
5. Step 5: Solve for x
   x = 5,255,273.52/2,119.50
6. Step 6: Final answer
   x = 2,479.49