Finding the Fourth Proportional to 2,609.91, 3,601.56 and 1,430.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,609.91 : 3,601.56 = 1,430.76 : x
2. Step 2: Convert to fraction form
   2,609.91/3,601.56 = 1,430.76/x
3. Step 3: Cross multiply
   2,609.91x = 3,601.56 × 1,430.76
4. Step 4: Simplify right side
   2,609.91x = 5,152,967.99
5. Step 5: Solve for x
   x = 5,152,967.99/2,609.91
6. Step 6: Final answer
   x = 1,974.39