Finding the Fourth Proportional to 2,530.59, 3,491.20 and 1,535.51

Step by Step Solution

1. Step 1: Write the proportion equation
   2,530.59 : 3,491.20 = 1,535.51 : x
2. Step 2: Convert to fraction form
   2,530.59/3,491.20 = 1,535.51/x
3. Step 3: Cross multiply
   2,530.59x = 3,491.20 × 1,535.51
4. Step 4: Simplify right side
   2,530.59x = 5,360,772.51
5. Step 5: Solve for x
   x = 5,360,772.51/2,530.59
6. Step 6: Final answer
   x = 2,118.39