Finding the Fourth Proportional to 812,124.24, 1,218,435.52 and 363,222.72

Step by Step Solution

1. Step 1: Write the proportion equation
   812,124.24 : 1,218,435.52 = 363,222.72 : x
2. Step 2: Convert to fraction form
   812,124.24/1,218,435.52 = 363,222.72/x
3. Step 3: Cross multiply
   812,124.24x = 1,218,435.52 × 363,222.72
4. Step 4: Simplify right side
   812,124.24x = 442,563,463,719.01
5. Step 5: Solve for x
   x = 442,563,463,719.01/812,124.24
6. Step 6: Final answer
   x = 544,945.52