Finding the Fourth Proportional to 2,570.47, 3,856.14 and 927.18

Step by Step Solution

1. Step 1: Write the proportion equation
   2,570.47 : 3,856.14 = 927.18 : x
2. Step 2: Convert to fraction form
   2,570.47/3,856.14 = 927.18/x
3. Step 3: Cross multiply
   2,570.47x = 3,856.14 × 927.18
4. Step 4: Simplify right side
   2,570.47x = 3,575,335.89
5. Step 5: Solve for x
   x = 3,575,335.89/2,570.47
6. Step 6: Final answer
   x = 1,390.93