Finding the Fourth Proportional to 2,250,165.78, 3,105,205.12 and 1,217,650.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,250,165.78 : 3,105,205.12 = 1,217,650.98 : x
2. Step 2: Convert to fraction form
   2,250,165.78/3,105,205.12 = 1,217,650.98/x
3. Step 3: Cross multiply
   2,250,165.78x = 3,105,205.12 × 1,217,650.98
4. Step 4: Simplify right side
   2,250,165.78x = 3,781,056,057,469.02
5. Step 5: Solve for x
   x = 3,781,056,057,469.02/2,250,165.78
6. Step 6: Final answer
   x = 1,680,345.55