Finding the Fourth Proportional to 2,609.85, 3,601.61 and 1,430.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.85 : 3,601.61 = 1,430.94 : x
2. Step 2: Convert to fraction form
   2,609.85/3,601.61 = 1,430.94/x
3. Step 3: Cross multiply
   2,609.85x = 3,601.61 × 1,430.94
4. Step 4: Simplify right side
   2,609.85x = 5,153,687.81
5. Step 5: Solve for x
   x = 5,153,687.81/2,609.85
6. Step 6: Final answer
   x = 1,974.71