Finding the Fourth Proportional to 2,618.23, 3,612.40 and 1,570.09

Step by Step Solution

1. Step 1: Write the proportion equation
   2,618.23 : 3,612.40 = 1,570.09 : x
2. Step 2: Convert to fraction form
   2,618.23/3,612.40 = 1,570.09/x
3. Step 3: Cross multiply
   2,618.23x = 3,612.40 × 1,570.09
4. Step 4: Simplify right side
   2,618.23x = 5,671,793.12
5. Step 5: Solve for x
   x = 5,671,793.12/2,618.23
6. Step 6: Final answer
   x = 2,166.27