Finding the Fourth Proportional to 2,609.19, 3,600.71 and 1,430.28

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.19 : 3,600.71 = 1,430.28 : x
2. Step 2: Convert to fraction form
   2,609.19/3,600.71 = 1,430.28/x
3. Step 3: Cross multiply
   2,609.19x = 3,600.71 × 1,430.28
4. Step 4: Simplify right side
   2,609.19x = 5,150,023.50
5. Step 5: Solve for x
   x = 5,150,023.50/2,609.19
6. Step 6: Final answer
   x = 1,973.80