Finding the Fourth Proportional to 2,648.63, 3,655.28 and 1,529.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,648.63 : 3,655.28 = 1,529.78 : x
2. Step 2: Convert to fraction form
   2,648.63/3,655.28 = 1,529.78/x
3. Step 3: Cross multiply
   2,648.63x = 3,655.28 × 1,529.78
4. Step 4: Simplify right side
   2,648.63x = 5,591,748.31
5. Step 5: Solve for x
   x = 5,591,748.31/2,648.63
6. Step 6: Final answer
   x = 2,111.19