Finding the Fourth Proportional to 1,456.02, 2,007.30 and 1,245.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,456.02 : 2,007.30 = 1,245.30 : x
2. Step 2: Convert to fraction form
   1,456.02/2,007.30 = 1,245.30/x
3. Step 3: Cross multiply
   1,456.02x = 2,007.30 × 1,245.30
4. Step 4: Simplify right side
   1,456.02x = 2,499,690.69
5. Step 5: Solve for x
   x = 2,499,690.69/1,456.02
6. Step 6: Final answer
   x = 1,716.80