Finding the Fourth Proportional to 2,178,778.50, 3,006,714.33 and 1,224,922.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,178,778.50 : 3,006,714.33 = 1,224,922.50 : x
2. Step 2: Convert to fraction form
   2,178,778.50/3,006,714.33 = 1,224,922.50/x
3. Step 3: Cross multiply
   2,178,778.50x = 3,006,714.33 × 1,224,922.50
4. Step 4: Simplify right side
   2,178,778.50x = 3,682,992,033,889.43
5. Step 5: Solve for x
   x = 3,682,992,033,889.43/2,178,778.50
6. Step 6: Final answer
   x = 1,690,393.05