Finding the Fourth Proportional to 1,570.10, 2,350.35 and 1,397.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,570.10 : 2,350.35 = 1,397.30 : x
2. Step 2: Convert to fraction form
   1,570.10/2,350.35 = 1,397.30/x
3. Step 3: Cross multiply
   1,570.10x = 2,350.35 × 1,397.30
4. Step 4: Simplify right side
   1,570.10x = 3,284,144.06
5. Step 5: Solve for x
   x = 3,284,144.06/1,570.10
6. Step 6: Final answer
   x = 2,091.68