Finding the Fourth Proportional to 5,410.89, 8,117.71 and 1,515.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,410.89 : 8,117.71 = 1,515.31 : x
2. Step 2: Convert to fraction form
   5,410.89/8,117.71 = 1,515.31/x
3. Step 3: Cross multiply
   5,410.89x = 8,117.71 × 1,515.31
4. Step 4: Simplify right side
   5,410.89x = 12,300,823.06
5. Step 5: Solve for x
   x = 12,300,823.06/5,410.89
6. Step 6: Final answer
   x = 2,273.35