Finding the Fourth Proportional to 1,498.30, 2,247.16 and 458.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.30 : 2,247.16 = 458.05 : x
2. Step 2: Convert to fraction form
   1,498.30/2,247.16 = 458.05/x
3. Step 3: Cross multiply
   1,498.30x = 2,247.16 × 458.05
4. Step 4: Simplify right side
   1,498.30x = 1,029,311.64
5. Step 5: Solve for x
   x = 1,029,311.64/1,498.30
6. Step 6: Final answer
   x = 686.99