Finding the Fourth Proportional to 2,458.02, 3,685.59 and 814.13

Step by Step Solution

1. Step 1: Write the proportion equation
   2,458.02 : 3,685.59 = 814.13 : x
2. Step 2: Convert to fraction form
   2,458.02/3,685.59 = 814.13/x
3. Step 3: Cross multiply
   2,458.02x = 3,685.59 × 814.13
4. Step 4: Simplify right side
   2,458.02x = 3,000,530.96
5. Step 5: Solve for x
   x = 3,000,530.96/2,458.02
6. Step 6: Final answer
   x = 1,220.71