Finding the Fourth Proportional to 3,118,406.50, 4,303,401.06 and 1,687,622.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,118,406.50 : 4,303,401.06 = 1,687,622.50 : x
2. Step 2: Convert to fraction form
   3,118,406.50/4,303,401.06 = 1,687,622.50/x
3. Step 3: Cross multiply
   3,118,406.50x = 4,303,401.06 × 1,687,622.50
4. Step 4: Simplify right side
   3,118,406.50x = 7,262,516,455,379.85
5. Step 5: Solve for x
   x = 7,262,516,455,379.85/3,118,406.50
6. Step 6: Final answer
   x = 2,328,919.10