Finding the Fourth Proportional to 820,530.72, 1,132,389.32 and 458,025.21

Step by Step Solution

1. Step 1: Write the proportion equation
   820,530.72 : 1,132,389.32 = 458,025.21 : x
2. Step 2: Convert to fraction form
   820,530.72/1,132,389.32 = 458,025.21/x
3. Step 3: Cross multiply
   820,530.72x = 1,132,389.32 × 458,025.21
4. Step 4: Simplify right side
   820,530.72x = 518,662,853,804.63
5. Step 5: Solve for x
   x = 518,662,853,804.63/820,530.72
6. Step 6: Final answer
   x = 632,106.56