Finding the Fourth Proportional to 2,372.58, 3,275.78 and 1,535.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,372.58 : 3,275.78 = 1,535.31 : x
2. Step 2: Convert to fraction form
   2,372.58/3,275.78 = 1,535.31/x
3. Step 3: Cross multiply
   2,372.58x = 3,275.78 × 1,535.31
4. Step 4: Simplify right side
   2,372.58x = 5,029,337.79
5. Step 5: Solve for x
   x = 5,029,337.79/2,372.58
6. Step 6: Final answer
   x = 2,119.78