Finding the Fourth Proportional to 1,735.48, 2,604.37 and 1,620.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,735.48 : 2,604.37 = 1,620.15 : x
2. Step 2: Convert to fraction form
   1,735.48/2,604.37 = 1,620.15/x
3. Step 3: Cross multiply
   1,735.48x = 2,604.37 × 1,620.15
4. Step 4: Simplify right side
   1,735.48x = 4,219,470.06
5. Step 5: Solve for x
   x = 4,219,470.06/1,735.48
6. Step 6: Final answer
   x = 2,431.30