Finding the Fourth Proportional to 2,118.42, 3,174.89 and 1,007.46

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118.42 : 3,174.89 = 1,007.46 : x
2. Step 2: Convert to fraction form
   2,118.42/3,174.89 = 1,007.46/x
3. Step 3: Cross multiply
   2,118.42x = 3,174.89 × 1,007.46
4. Step 4: Simplify right side
   2,118.42x = 3,198,569.64
5. Step 5: Solve for x
   x = 3,198,569.64/2,118.42
6. Step 6: Final answer
   x = 1,509.88