Finding the Fourth Proportional to 2,148.39, 3,222.05 and 1,570.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.39 : 3,222.05 = 1,570.20 : x
2. Step 2: Convert to fraction form
   2,148.39/3,222.05 = 1,570.20/x
3. Step 3: Cross multiply
   2,148.39x = 3,222.05 × 1,570.20
4. Step 4: Simplify right side
   2,148.39x = 5,059,238.95
5. Step 5: Solve for x
   x = 5,059,238.95/2,148.39
6. Step 6: Final answer
   x = 2,354.90