Finding the Fourth Proportional to 2,007.60, 3,006 and 1,140.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.60 : 3,006 = 1,140.72 : x
2. Step 2: Convert to fraction form
   2,007.60/3,006 = 1,140.72/x
3. Step 3: Cross multiply
   2,007.60x = 3,006 × 1,140.72
4. Step 4: Simplify right side
   2,007.60x = 3,429,004.32
5. Step 5: Solve for x
   x = 3,429,004.32/2,007.60
6. Step 6: Final answer
   x = 1,708.01