Finding the Fourth Proportional to 2,256,401.50, 3,113,815.77 and 1,223,906.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,256,401.50 : 3,113,815.77 = 1,223,906.70 : x
2. Step 2: Convert to fraction form
   2,256,401.50/3,113,815.77 = 1,223,906.70/x
3. Step 3: Cross multiply
   2,256,401.50x = 3,113,815.77 × 1,223,906.70
4. Step 4: Simplify right side
   2,256,401.50x = 3,811,019,983,468.66
5. Step 5: Solve for x
   x = 3,811,019,983,468.66/2,256,401.50
6. Step 6: Final answer
   x = 1,688,981.32