Finding the Fourth Proportional to 2,620.31, 3,615.68 and 1,625.23

Step by Step Solution

1. Step 1: Write the proportion equation
   2,620.31 : 3,615.68 = 1,625.23 : x
2. Step 2: Convert to fraction form
   2,620.31/3,615.68 = 1,625.23/x
3. Step 3: Cross multiply
   2,620.31x = 3,615.68 × 1,625.23
4. Step 4: Simplify right side
   2,620.31x = 5,876,311.61
5. Step 5: Solve for x
   x = 5,876,311.61/2,620.31
6. Step 6: Final answer
   x = 2,242.60