Finding the Fourth Proportional to 2,231.78, 3,081.75 and 1,570.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.78 : 3,081.75 = 1,570.10 : x
2. Step 2: Convert to fraction form
   2,231.78/3,081.75 = 1,570.10/x
3. Step 3: Cross multiply
   2,231.78x = 3,081.75 × 1,570.10
4. Step 4: Simplify right side
   2,231.78x = 4,838,655.68
5. Step 5: Solve for x
   x = 4,838,655.68/2,231.78
6. Step 6: Final answer
   x = 2,168.07