Finding the Fourth Proportional to 2,648.60, 3,655.42 and 1,529.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.60 : 3,655.42 = 1,529.60 : x
2. Step 2: Convert to fraction form
   2,648.60/3,655.42 = 1,529.60/x
3. Step 3: Cross multiply
   2,648.60x = 3,655.42 × 1,529.60
4. Step 4: Simplify right side
   2,648.60x = 5,591,330.43
5. Step 5: Solve for x
   x = 5,591,330.43/2,648.60
6. Step 6: Final answer
   x = 2,111.05