Finding the Fourth Proportional to 2,572.49, 3,858.06 and 1,012.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,572.49 : 3,858.06 = 1,012.49 : x
2. Step 2: Convert to fraction form
   2,572.49/3,858.06 = 1,012.49/x
3. Step 3: Cross multiply
   2,572.49x = 3,858.06 × 1,012.49
4. Step 4: Simplify right side
   2,572.49x = 3,906,227.88
5. Step 5: Solve for x
   x = 3,906,227.88/2,572.49
6. Step 6: Final answer
   x = 1,518.46