Finding the Fourth Proportional to 1,685,443.92, 2,528,417.60 and 620,404.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,685,443.92 : 2,528,417.60 = 620,404.96 : x
2. Step 2: Convert to fraction form
   1,685,443.92/2,528,417.60 = 620,404.96/x
3. Step 3: Cross multiply
   1,685,443.92x = 2,528,417.60 × 620,404.96
4. Step 4: Simplify right side
   1,685,443.92x = 1,568,642,819,991.30
5. Step 5: Solve for x
   x = 1,568,642,819,991.30/1,685,443.92
6. Step 6: Final answer
   x = 930,700.10