Finding the Fourth Proportional to 1,570.22, 2,357.37 and 1,328.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570.22 : 2,357.37 = 1,328.28 : x
2. Step 2: Convert to fraction form
   1,570.22/2,357.37 = 1,328.28/x
3. Step 3: Cross multiply
   1,570.22x = 2,357.37 × 1,328.28
4. Step 4: Simplify right side
   1,570.22x = 3,131,238.58
5. Step 5: Solve for x
   x = 3,131,238.58/1,570.22
6. Step 6: Final answer
   x = 1,994.14