Finding the Fourth Proportional to 2,529.78, 3,491.37 and 1,535.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,529.78 : 3,491.37 = 1,535.10 : x
2. Step 2: Convert to fraction form
   2,529.78/3,491.37 = 1,535.10/x
3. Step 3: Cross multiply
   2,529.78x = 3,491.37 × 1,535.10
4. Step 4: Simplify right side
   2,529.78x = 5,359,602.09
5. Step 5: Solve for x
   x = 5,359,602.09/2,529.78
6. Step 6: Final answer
   x = 2,118.60