Finding the Fourth Proportional to 2,456.51, 3,684.89 and 813.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,456.51 : 3,684.89 = 813.02 : x
2. Step 2: Convert to fraction form
   2,456.51/3,684.89 = 813.02/x
3. Step 3: Cross multiply
   2,456.51x = 3,684.89 × 813.02
4. Step 4: Simplify right side
   2,456.51x = 2,995,889.27
5. Step 5: Solve for x
   x = 2,995,889.27/2,456.51
6. Step 6: Final answer
   x = 1,219.57