Finding the Fourth Proportional to 2,609.80, 3,601.52 and 1,430.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.80 : 3,601.52 = 1,430.89 : x
2. Step 2: Convert to fraction form
   2,609.80/3,601.52 = 1,430.89/x
3. Step 3: Cross multiply
   2,609.80x = 3,601.52 × 1,430.89
4. Step 4: Simplify right side
   2,609.80x = 5,153,368.16
5. Step 5: Solve for x
   x = 5,153,368.16/2,609.80
6. Step 6: Final answer
   x = 1,974.62