Finding the Fourth Proportional to 2,570.36, 3,856.76 and 1,400.31

Step by Step Solution

1. Step 1: Write the proportion equation
   2,570.36 : 3,856.76 = 1,400.31 : x
2. Step 2: Convert to fraction form
   2,570.36/3,856.76 = 1,400.31/x
3. Step 3: Cross multiply
   2,570.36x = 3,856.76 × 1,400.31
4. Step 4: Simplify right side
   2,570.36x = 5,400,659.60
5. Step 5: Solve for x
   x = 5,400,659.60/2,570.36
6. Step 6: Final answer
   x = 2,101.13