Finding the Fourth Proportional to 1,123,615.37, 1,685,590.86 and 413,589.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,615.37 : 1,685,590.86 = 413,589.42 : x
2. Step 2: Convert to fraction form
   1,123,615.37/1,685,590.86 = 413,589.42/x
3. Step 3: Cross multiply
   1,123,615.37x = 1,685,590.86 × 413,589.42
4. Step 4: Simplify right side
   1,123,615.37x = 697,142,546,144.70
5. Step 5: Solve for x
   x = 697,142,546,144.70/1,123,615.37
6. Step 6: Final answer
   x = 620,445.90