Finding the Fourth Proportional to 5,431.86, 8,146.89 and 1,535.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,431.86 : 8,146.89 = 1,535.31 : x
2. Step 2: Convert to fraction form
   5,431.86/8,146.89 = 1,535.31/x
3. Step 3: Cross multiply
   5,431.86x = 8,146.89 × 1,535.31
4. Step 4: Simplify right side
   5,431.86x = 12,508,001.69
5. Step 5: Solve for x
   x = 12,508,001.69/5,431.86
6. Step 6: Final answer
   x = 2,302.71