Finding the Fourth Proportional to 2,007.18, 3,007.53 and 1,642.14

Step by Step Solution

1. Step 1: Write the proportion equation
   2,007.18 : 3,007.53 = 1,642.14 : x
2. Step 2: Convert to fraction form
   2,007.18/3,007.53 = 1,642.14/x
3. Step 3: Cross multiply
   2,007.18x = 3,007.53 × 1,642.14
4. Step 4: Simplify right side
   2,007.18x = 4,938,785.31
5. Step 5: Solve for x
   x = 4,938,785.31/2,007.18
6. Step 6: Final answer
   x = 2,460.56