Finding the Fourth Proportional to 1,123,555.32, 1,685,081.88 and 324,658.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,555.32 : 1,685,081.88 = 324,658.80 : x
2. Step 2: Convert to fraction form
   1,123,555.32/1,685,081.88 = 324,658.80/x
3. Step 3: Cross multiply
   1,123,555.32x = 1,685,081.88 × 324,658.80
4. Step 4: Simplify right side
   1,123,555.32x = 547,076,661,062.54
5. Step 5: Solve for x
   x = 547,076,661,062.54/1,123,555.32
6. Step 6: Final answer
   x = 486,915.64