Finding the Fourth Proportional to 1,136,609.62, 1,568,553.86 and 620,395.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,136,609.62 : 1,568,553.86 = 620,395.61 : x
2. Step 2: Convert to fraction form
   1,136,609.62/1,568,553.86 = 620,395.61/x
3. Step 3: Cross multiply
   1,136,609.62x = 1,568,553.86 × 620,395.61
4. Step 4: Simplify right side
   1,136,609.62x = 973,123,922,500.77
5. Step 5: Solve for x
   x = 973,123,922,500.77/1,136,609.62
6. Step 6: Final answer
   x = 856,163.72