Finding the Fourth Proportional to 2,261,580.72, 3,391,845.39 and 663,714.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,261,580.72 : 3,391,845.39 = 663,714.78 : x
2. Step 2: Convert to fraction form
   2,261,580.72/3,391,845.39 = 663,714.78/x
3. Step 3: Cross multiply
   2,261,580.72x = 3,391,845.39 × 663,714.78
4. Step 4: Simplify right side
   2,261,580.72x = 2,251,217,916,817.86
5. Step 5: Solve for x
   x = 2,251,217,916,817.86/2,261,580.72
6. Step 6: Final answer
   x = 995,417.89